Get **statistics assignment help** from expert writers.

Concepts of Population and SamplePopulation: a collection of the whole of something – e.g. all students of UCLA; all people who live in LA; all people who play the guitar.Sample: a set of individuals drawn from a population e.g. the female students in UCLA are a sample of all students at UCLA.Values associated with population are parameters and those with sample are statistics. Types of data: Discrete and Continuous There can be two types of data: Discrete and Continuous. Discrete data does not deal with intervals but Continuous data has interval formations. Tools used for discrete data are pie charts, graphs. Tools used for continuous data are cumulative frequency distribution, histograms, and frequency plots. Quantiles: Quartiles divide the data into quarters and Quintiles, deciles and Percentiles divide the data into percentages. Formula for percentiles: Lp = (n+1)P/100Measures of central tendency Arithmetic Mean = ∑Xi/n Variance = ∑xi^2/n-1 Median is the centre most observation of the data. Formula to be used is: middle value if n is odd; average of middle two values if n is even Interquartile Range = IQR (Q3-Q1) Coefficient of variation: It is defined as a measure of spread as a proportion of the level of the centre called cv. CV = s/ XbarCovariance: Measures the linear relationship between X and Y. sign indicates direction of slope, but magnitude is dependent on units of measurement.Calculated as : ∑(xi-xbar) (yi-ybar)/n-1 Coefficient of Correlation: Measures the strength of relationship between X and Y.Formula: r =Cov(x,y)/sx.sy If r=-1, perfect negative linear relationship If r=+1, perfect positive linear relationship If r=0, no LINEAR relationship Important Probability formulas to be used: P(A or B) = P(A ∪ B) = P(A union with B) P(A or B) = P(A ∪ B) = P(A union with B) = P(A occurs, or B occurs, or both occur) P(A and B) = P(A ∩ B) = P(A intersection with B) = P(A and B both occur) P(A̅)=P(Ac)= P(A complement) = P(A does not occur) P(B|A)=P(B occurs given that A has occurred P(A) = P(A∩B) + P(A ∩ Bc) P(A or B)=P(A)+P(B)-P(A and B) Conditional Probability Formula: P(A/B) = P(AB)/P(B)Formula to check if A and B are independent events:If A and B are independent, then P(A and B) = P(A)*P(B) Then P(A|B) = [P(A and B)]/P(B) =[P(A)*P(B)] /P(B) =P(A) Formula for complement i.e.: P(A not happening) = 1- P(A) i.e. 1- P(A happening)Formula for expectation of an eventIf X and Y are random variables, and c is any constant, then the following hold: E(c)=c E(cX)=cE(X) E(X-Y)=E(X)-E(Y) E(X+Y)=E(X)+E(Y) E(XY)=E(X)*E(Y) only if X and Y are independent Formulas for variance:If X and Y are r.v.s and c is a constant, V(c)=0 V(cX)=c^2V(X) V(X+c)=V(X) V(X+Y)=V(X)+V(Y) -if X and Y are independent V(X-Y)=V(X)+V(Y) – if X and Y are independent Formula for independent probability:If the random variables X and Y are independent, then P(X=x and Y=y) = P(X=x) . P(Y=y) p(x,y) = px(x) . py(y) Linear Combination Formula:Suppose L = aX + bY E(L) = aE(x) + bE(Y) Var (L) = a^2V(X) + b^2V(Y) Formula for Combination: ^{n}C_{k} = n!/k!(n-k)!Formula for Permutation: ^{n}p_{k} = n!/(n-k)!Continuous PDF Properties:1) f(x) must satisfy the following: 2) f(x)=0 for all x, that is, it must be non-negative. The total area under the curve will be f(x) = 1 Formula used to calculate continuous PDFP(a < X < b) = area under the curve between a and b Evaluate as : ∫ f(x) dx ( evaluated from a to b) Mean and Variance of uniform distribution:E(x) = a+ b/2 V(x) = (b-a)^2/12 If X~N(µ/σ), then formula to be used for the linear transformation is:Z = (X-µ/σ) is normally distributed with N(0,1) Formula for probabilities by using normal distribution:P(X < a) = P( X-µ/σ < α-µ/σ)=P(Z < α-µ/σ) Where z is normally distributed with (0,1) |

- Statistics Question
E–x-a-m Time:

Q-u-i-z –> Open 28/3/2022 12-am – Closed 05/4/2022 6-pm

(4 days window) Unlimited Attempt

Duration: around 1 hr

Question structure: The examination will consist of short answer conceptual questions and practical exercises/problem questions. The questions will be comparable to those covered in class; therefore, the best form of revision will be to work through lecture and tutorial questions, exercises and problems.

## reading notes

WhitenessFrom the DiAngelo chapters from White Fragility, think and write about these new ideas. Identify 3 facts/quotes/sections that were especially interesting to you. Clearly quote or explain the specific information.

Then, write quite a few sentences for each about why this interested you, or what you are thinking about this information, or how it challenges or reaffirms ideas you already hold, or how it makes you uncomfortable, or how it connects with other course content this semester.

The response should show evidence of having listened to and understood the concepts, viewpoints, research.

DisabilityThe readings here are optional. But after watching the Disability Presentation/PowerPoint/Lecture, write one key idea or new understanding about Disability Studies, Ableism, or DisCrit from the Presentation. Be sure to include a direct quote, and tell what or how this information changes your understanding of disability and special education.

Optional: If you read either of the 2 optional chapters on Disability, you can include ideas from those readings here.

See rubric for grading on syllabus or here: Rubric for Readings Notes and Discussions (Word Doc)

## Economics Question

Statistics Assignment Help E–x-a-m Time:

Q-u-i-z –> Open 28/3/2022 12-am – Closed 05/4/2022 6-pm

(4 days window) Unlimited Attempt

Duration: around 1 hr

Question structure: The examination will consist of short answer conceptual questions and practical exercises/problem questions. The questions will be comparable to those covered in class; therefore, the best form of revision will be to work through lecture and tutorial questions, exercises and problems.

## Statistics Survey Project

Description

For the data survey project, you will address a question that interests you with the statistical methodology we learn in Statistics Ma-212-21SP2. You choose the question; you decide how to collect data; and you do the analyses. The questions can address almost any topic (It MUST be classroom appropriate.), including topics in economics, entertainment, psychology, sociology, natural science, medicine, public policy, sports, law, etc. Do NOT do a simple survey like what is your favorite ice cream flavor.

The project requires you to synthesize all the material from the course so far.

Your project will be presented in a Google Slides or some other presentation tool.

You must get a sample of at least 50 people. In other words, at least fifty people must complete your survey. Be sure to use the statistical methods that you have learned in class. There is no formal write-up of your project, i.e., no term paper is written. Also, include in your statistics that some people didn’t fill the survey. Each person must submit a project.

Presentation and Point Value

You must include each of the following on separate slides:

· Topic

· Question asked

· Link to actual survey submissions or screenshots of results on a couple of slides

· Define any terms if necessary.

· State what you want to find out.

· Describe exactly how you are surveying the individuals and what is your population. (1 pt.)

· Survey with the question(s) you are asking people. (1 pt.)

· State how you obtained your sample. What sampling method did you use? Explain if you used a random sample and why not if you did not. How can you change the survey results (2 pts.)

· Present relevant descriptive statistics. (2 pts.)

· Results of the survey in chart and graph form. (1 pt.)

· Find the mean, median, mode, midrange, range, and standard deviation. (2 pts.)

· Summarize your results in words. (2 pts.)

All Materials :

1. https://docs.google.com/presentation/d/1MOaXdsrtwCkDOiqNMtmwCMGjGfsIP3IH-ewXwhHfNRs/copy?usp=sharing

2. https://docs.google.com/presentation/d/1XuH8GsDQeUBtSTISWi4EOwq96_gFzrNd-XF_W2UKSUo/copy?usp=sharing

3. https://docs.google.com/presentation/d/1hcCneOgFWRVCJ13gk6nADpnhEw4Aah_MUvmp8IbCuiw/copy?usp=sharing

## Business Question

E–x-a-m Time:

Q-u-i-z –> Open 28/3/2022 12-am – Closed 05/4/2022 6-pm

(4 days window) Unlimited Attempt

Duration: around 1 hr

Question structure: The examination will consist of short answer conceptual questions and practical exercises/problem questions. The questions will be comparable to those covered in class; therefore, the best form of revision will be to work through lecture and tutorial questions, exercises and problems.

## read and write

Gain tips and insight on various career development topics through KICS led workshops

Reflection Requirement: a typed, one page, and single-spaced reflection paper that answers the following questions:

How would summarize the workshop you attended?

What aspects of the workshop were most helpful to you? Why?

What is one professional goal you would implement based on what you learned from the workshop?

## SVC101 Speech

An informative speech is one that aims to inform the audience about a given topic. We were all born in a city, a township, or the country. We call this our “hometown.” This will be the topic of your speech, and will require research. A minimum of two references are required and must be included and credited within the speech. Always make an effort to personalize your content and engage your audience. Your hometown has a story to tell, so consider researching demographics, location, and historical significance to get you started. Use the online information below to also assist.

Need an informative paper about Mcdonough, GA length 2 pages. No format needed

## Statistics Question

E–x-a-m Time:

Q-u-i-z –> Open 28/3/2022 12-am – Closed 05/4/2022 6-pm

(4 days window) Unlimited Attempt

Duration: around 1 hr

Question structure: The examination will consist of short answer conceptual questions and practical exercises/problem questions. The questions will be comparable to those covered in class; therefore, the best form of revision will be to work through lecture and tutorial questions, exercises and problems.

## Economics Question

E–x-a-m Time:

Q-u-i-z –> Open 28/3/2022 12-am – Closed 5/4/2022 6-pm

(4 days window) Unlimited Attempt

Duration: around 1 hr

Question structure: The examination will consist of short answer conceptual questions and practical exercises/problem questions. The questions will be comparable to those covered in class; therefore, the best form of revision will be to work through lecture and tutorial questions, exercises and problems.

## Contemporary Approach- Criminal Law

The requirement to establish rape under the common law represents a different statutory approach than more contemporay statutory reform approaches. Is the contemporary approach more reasonable? Explain why or why not.Is there an element of the common law approach that you believe should not have been abandoned as our approach to rape and sexual assault developed? (If you don’t agree with any of them, select one that most closely resonates with you and defend it.)

High $TIP$ IS GIVEN FOR WORK THAT IS COMPLETED ON TIME AND DONE CORRECTLY. $1 $50

Needs to be at least 2 paragraphs. 5-7 sentences in each.

- Homework #2 Essay
Analyze the data provided in the google sheets and interpret the results. I have attached the Prompt for this homework assignment as “Homework Prompt #2”. I have also attached the google sheet with the data to be analyzed and another file titled “Homework Guidelines” to ensure that the assignment is completed as required. ## I need a statistics writer who could understand the INSTRUCTION FROM the professor’s feedback. I wrote my own research

I need a statistics writer who could understand the INSTRUCTION FROM the professor’s feedback. I wrote my own research design on logistics regression and I need the writer to edit it, please. Just edit what he asked.

This is his feedback:

“The purpose of the discussion board is not to analyze data, it is to design a study that you could conduct with existing data or data you collect. Your dependent variable, in this case, is whether a student goes to public vs. private school. Therefore, your literature review should be about the characteristics that differentiate whether kids go to public or private school.You do a good job describing the HSB data set and the variables you use.

Rather than analyzing the data, you should describe how you would analyze and validate the study.

You should also talk about threats to internal validity. What other variables or factors aside from the ones you listed might account for differences in whether students go to public or private schools?

Again, I don’t need the analysis. I just need you to describe the plan and how you will validate it. I also need you to focus on whether kids go to public or private school as the dependent variable. Your logistic regression is about understanding which factors account for whether kids go to public or private school.”

AND I WILL UPLOAD MY WORK AND THE WRITER CAN EDIT IT.

## 1. What two properties must be satisfied by a continuous probability distribution / probability curve? 2. Explain what the

Statistics Assignment Help 1. What two properties must be satisfied by a continuous probability distribution / probability curve?

2. Explain what the mean µ tells us about a normal curve, and explain what the standard deviation ? tells us about a normal curve.

3. Explain how to compute the z value. What does the z value tell us about the value of the random variable?

4. Let x be a normally distributed random variable with µ=30 and ?=5. Find the z value for each of the following observed values of x:

a. X = 25

b. X = 15

c. X = 30

d. X = 40

e. X = 50

5. If the random variable z has a standard normal distribution, sketch and find each of the following probabilities.

a. P( 0 < z <1.5)

b. P( z > 2)

c. P( z < 1.7)

d. P( z < -1.6)

6. Weekly demand at a grocery store for a brand of breakfast cereal is normally distributed with a mean of 800 boxes and a standard deviation of 75 boxes. What is the probability that the weekly demand is:

a. 960 boxes or less?

b. More than 1005 boxes?

c. Between 750 and 850 boxes?

7. What does the Central Limit Theorem tell us about the sampling distribution and sample mean?

8. In each of the following cases, determine whether the sample size n is large enough to say that the sampling distribution of p (p hat) is a normal distribution.

a. P=0.4; n=100

b. P=0.1; n=10

c. P=0.1, n=50

## Part 1. Title and Introduction a. Create a nice title for your report. b. Write a very informative introduction.

Part 1. Title and Introduction

a. Create a nice title for your report.

b. Write a very informative introduction.

• Using your own words, inform your audience what do you understand about the uses and Importance of salary

surveys.

• Using your own words, inform your audience what are confidence intervals and their practical applications.

• Talk about their importance and provide practical applications on the industry of your interest.

Remember to use at least 3 different academic references.

Part 2 and 3 are in the attachment.

Please talk to me if you have any questions.

- Central Limit Theorem Each week, you will be asked to respond to the prompt or prompts in the discussion
Central Limit Theorem Each week, you will be asked to respond to the prompt or prompts in the discussion forum. Your initial post should be 75-150 words in length, and is due on Sunday. By Tuesday, you should respond to two additional posts from your peers.

For the last several weeks, you have been working with this scenario.

ABC Enterprises is a growing company in which employees must frequently travel for business. Currently, each employee is allotted 30 dollars each day to cover all meals. Employees have complained that this is not enough, especially when traveling to some of the more costly cities and countries. A survey was taken to get recommendations for a new allotment. Although not all responded, the response rate was good.

This week, we are going to use the Central Limit Theorem. We are going to pretend that our data set represents the entire population of ABC Company. It doesn’t, but we are going to pretend that it does.

1. What is the mean dollar amount that is recommended by the population of employees?

2. Now, we are going take 3 samples of 10 dollar amounts from the spreadsheet and average (find the mean of) them. Open the spreadsheet and make sure you are on the Week 4 tab.

Go to the random number generator at https://www.google.com/search?q=random number generator

## Topic Hypothesis testing is performed for clinical trials. Explore at least one clinical trial located under: https://clinicaltrials.gov/ Be sure

Topic

Hypothesis testing is performed for clinical trials. Explore at least one clinical trial located under:

https://clinicaltrials.gov/

Be sure to choose “Advanced Search” and “Studies with Results” located under “Study Results”. Explain what the clinical trial is studying and explain some of the items using the components studied in this course (such as n, type of sampling, p-value, etc).

## Math/Physic/Economic/Statistic Problems

Statistics Assignment Help Instructions: First, develop two testable hypotheses that could be evaluated with a t-Test in your final paper dataset. One of these two hypotheses should/could be the topic for your final paper in the course. Then, using the dataset for your final paper in the course, conduct two t-Tests in JASP to evaluate these hypotheses. These tests can use the same IVs or the same DVs, but they must be otherwise unique analyses. Note that you’ll need to use the codebook for your dataset to examine some of the variables appropriately (e.g., which numbers represent which gender). Then, submit your assignment according to the What/How to Report section below.What/How to Report: Write a paragraph describing each of the two analyses above and their results in APA style (i.e., analysis conducted, hypothesis, key statistics, results in everyday language). You should use the template provided on the slides from the t-Test lecture Download the slides from the t-Test lecture to ensure that you’re writing in APA style. If either result is statistically significant, you must also include an APA-style figure for it. Therefore, your final submission should two paragraphs and figures (if statistically significant). You should also include your output from JASP as an appendix.*** The hypothesis I am using is that more days in COVID quarantine lead to unhealthier habits and feelings of loneliness. ***

## Fearon Assignment Essay

– Identify and briefly describe the following three items:

– 1) the research question,

– 2) independent and dependent variables (as concepts as well as how they are

operationalized),

– 3) the sample and the population of interest

• Super important analytic skill: While reading, practice

thinking the following way: Think about and identify

possible limitations and weaknesses of the study, but don’t

stop there—THEN think through how correcting this

weakness would be expected to affect the findings (if at all).

(Challenging, but crucial practice for the CRRs.) - Part 1) For each of the quantitative research objectives listed below: Identify variables to be measured. Develop a minimum Essay
Part 1) For each of the quantitative research objectives listed below: Identify variables to be measured.

Develop a minimum of four (4) sample questions to be included in the questionnaire.

Identify how each question will be scored.

Identify the level of measurement for each question.

Recommend a method of survey administration to be used.

Quantitative Research ObjectivesTo determine if advertising during the Super Bowl is effective in increasing consumers’ product awareness. Use a product of your choosing. State the name of the product that was advertised.

To determine patient satisfaction of patients who are admitted to a hospital during the past 6 months.

To determine if there is a relationship between the decision to pursue a career in law enforcement and gender.

To determine IT professional’s perceptions of the best preparation for an IT career.Part 2)

Explain the method of survey administration you would use if a survey was conducted in your intended research.

## Topic In nursing, we seldom know the true values or percentages of many illnesses or syndromes. For example, if

Topic

In nursing, we seldom know the true values or percentages of many illnesses or syndromes. For example, if we were asked how many people contracted a particular strain of flu during a year then we could give estimates but not the true count. Not everybody went to the doctor or emergency room. Most probably did not get a test to determine the particular strain of the flu. Sometimes we just deal with estimates.

For example, in a survey done in November 2018, 43% of people in the United States had been vaccinated against the flu with 3.9% margin of error with 95% confidence (“News Scan for Dec 06, 2018”, 2018). This would allow us to create a confidence interval:

lower bound = 43% – 3.9% = 39.1%

upper bound = 43% 3.9% = 46.9%

so we are 95% confident that the true percentage of individuals that got vaccinated is between 39.1% and 46.9%.

Reference

News Scan for Dec 06, 2018. (2018). Retrieved from http://www.cidrap.umn.edu/news-perspective/2018/12/news-scan-dec-06-2018 (Links to an external site.)

Find at least two examples of confidence intervals on the internet. you can search for “95% confidence”, “Margin of Error”, or even “confidence interval” to find examples.

## The exam is composed of two parts. In this part (Part 1), you are given a spreadsheet with two

Statistics Assignment Help The exam is composed of two parts. In this part (Part 1), you are given a spreadsheet with two worksheets. Each worksheet corresponds a problem. Follow the instructions in each worksheet. When finished, submit your Excel file with your work. This section is worth 70 points. There is no time limit on this portion. Please submit prior to the due date.

## Here is what the below answered already, I do not need this answered only the guided response that is

Here is what the below answered already, I do not need this answered only the guided response that is also below for both comments 1

- The project must be submitted in paragraph form and not just a list of the calculations from your project.
The project must be submitted in paragraph form and not just a list of the calculations from your project. Be sure your paragraphs flow (not just listing the answers to the questions, but complete sentences with transitions) and are written in third person. You are presenting your results to a nonstatistical audience, do not describe the calculations, describe your results. It should include the following: Paragraph 1:

Brief summary of the article, including the source

Link for article: https://www.usnews.com/higher-education/online-education/articles/2017-04-04/us-news-data-the-average-online-bachelors-student

Define the population, sample, and statistic for the study

Statement of the two claims in the article that were tested in this project

Null and alternative hypothesis for both tests run for this project (in words)

Paragraph 2 (address the claim about the mean):

Summary of sample statistics (mean, standard deviation, median, quartiles, sample size)

Confidence interval, along with interpretation of the confidence interval

Descriiption of hypothesis test (alpha, test statistic, p-value, conclusion, interpretation)

Paragraph 3 (address the claim about the proportion):

Summary of sample statistics (sample size, successes, proportion)

Confidence interval, along with interpretation of the confidence interval

Descriiption of hypothesis test (alpha, test statistic, p-value, conclusion, interpretation)Please use the excel spreadsheet. If you are able to complete sheet labeled “Week 6” I can tip $100.00.

## PSY805 Evaluate Statistical Analyses

This week, you have learned about t-tests and ANOVA and will apply what you have learned in the evaluation of several research scenarios (Hyperlink and the 3 attached files). For this task, you will read each research scenario and answer the questions regarding each one.

Research Scenario 1A researcher is interested in the effects of a new weight loss supplement. Participants in this double-blind study are randomly assigned to either a group that receives the new supplement or a group that receives a placebo. Participants are weighed before starting the program. After 6 weeks of taking either the new supplement or the placebo, participants return to the lab to be weighed.

Provide the appropriate null and alternative hypotheses.

Determine which type of analysis would be appropriate to answer this research question. Be specific and support your answer using the textbook or other course materials.

Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?

Indicate the levels of measurement for each variable.

Describe the Type I error for this study.

Describe the Type II error for this study.

Research Scenario 2A researcher is interested in whether certain memory strategies help people to remember information. This researcher employs students from a local college, and then randomly assigns them to one of three groups—the visualization group, the mnemonic technique group, and the rote repetition group. Participants in each group receive an hour of instruction regarding how to use the particular technique to remember lists of words. After the instruction, all participants are presented with a list of 60 words that they are instructed to remember. The words are presented one-at-a time on a computer screen. After the last word is presented, all participants are instructed to recall as many words as possible by writing them on a blank sheet of paper. All participants are given 10 minutes to recall the words.

Provide the appropriate null and alternative hypotheses.

Indicate which type of analysis would be appropriate to answer this research question. Be specific and support your answer using the textbook or other course materials.

Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?

Indicate the levels of measurement for each variable.

Describe the Type I error for this study.

Describe the Type II error for this study

Research Scenario 3A local manufacturing company is interested in determining whether their employees are as happy with their jobs as other employees. The manufacturing company asked the workers, who volunteered to participate, to rate their happiness at work on a scale from 1 to 10 where 1 was not at all happy and 10 was extremely happy. The manufacturing company found that the mean happiness rating for their employees is 7.3. In the general population of workers in the United States, the mean happiness rating is 6.

Provide the appropriate null and alternative hypotheses.

Determine which type of analysis would be appropriate to answer this research question. Be specific. Please support your answer using the textbook or other course materials.

Name the variables used in the analysis.

What are the levels of measurement for each variable?

Describe the Type I error for this study.

Describe the Type II error for this study

Length: 1-2 pagesYour paper should demonstrate thoughtful consideration of the ideas and concepts presented in the course by providing new thoughts and insights relating directly to this topic. Your response should reflect scholarly writing and current APA standards.

https://conjointly.com/kb/statistical-student-t-te…

## Statistics Question

Statistics Assignment Help Read about hypothesis testing (2 attached files and 2 hyperlinks), now apply this knowledge by writing a paper that addresses the following:

Provide an example of a hypothesis where a one-tailed hypothesis test would be used.

Provide an example of a hypothesis where a two-tailed hypothesis test would be used.

If a researcher has set alpha at 0.05 for a two-tailed hypothesis test, what is the p-value required to reject the null hypothesis?

A researcher has set alpha at 0.05. When the researcher analyzes the data from the experiment using a software program, she obtains a p-value equal to 0.932. Based on this p-value, should the researcher reject the null hypothesis or fail to reject the null hypothesis? Please explain your answer.

A researcher has set alpha at 0.01. When the researcher analyzes the data from the experiment using a software program, he obtains a p-value equal to 0.04. Based on this p-value, should the researcher reject the null hypothesis or fail to reject the null hypothesis? Please explain your answer.

A researcher is interested in whether music played during an exam will improve exam performance. Students in one class listen to music during an exam and students in another class take the exam in silence. The researcher set alpha at 0.05. Test scores for both classes are compared using a statistical software program. The mean test score for the class that listened to music during the exam is 95, while the mean test score for the class that took the exam in silence is 82. The obtained p-value from the independent groups t-test is 0.02. Be sure to answer the following questions:State the null and alternative hypothesis.

Determine if this is a directional or non-directional test. Please explain your answer.

Establish the conclusion of this study based on the p-value and the means provided.

Describe the Type I error for this study.

Describe the Type II error for this study.Length:1-2 pages not including title and reference page

Your paper should demonstrate thoughtful consideration of the ideas and concepts presented in the course by providing new thoughts and insights relating directly to this topic. Your response should reflect scholarly writing and current APA standards.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC29961…

https://www.statsdirect.com/help/default.htm#basic…

## Discussion 5

Imagine

yourself at a fair playing one of the midway games. Pick a game and

calculate the expected value and post your results along with how you

calculated them. For example, you may decide to throw a basketball to

try to win a $10 bear. You paid $2.00 for three shots. What is the

expected value? (Please do not use this example in your answer)

- Discussion 7
Go

to a local library; collect a sample of books consisting of the ages of

book (based on copyright dates). Plan and describe the sampling

procedure, then use the results to construct a confidence interval

estimate of the mean age of all books in the library.

## Quantitative Data Results

I have provided you with my data for the survey question: “What knowledge and experience have you acquired on each of the following”. There were two participant groups. Group 1 completed a mental health course, Group 2 did not complete a mental health course. Therefore, it is important to report the results for these groups separately – DO NOT COMBINE THEM please.

In a Microsoft Word document, clearly and concisely write up (summarize) the results for each group of participants. This should not take long – please just report the summative values, as you would report them in a Results section for a thesis or dissertation.

## Topic 4 Homework

Statistics Assignment Help Create an 8-10 slide PowerPoint to discuss the findings for either the chi-square or correlation findings. For the presentation of your PowerPoint, use Loom to create a voice-over or a video. Refer to the topic resources for additional guidance on recording your presentation with Loom. Include an additional slide for the Loom link at the beginning, and an additional slide for references at the end.

Include the following:

Explain why the statistical test is most appropriate for analyzing the data and whether the assumptions were met.

What are the null and alternative hypotheses?

What is the decision rule?

What is the test statistic and p-value?

How do you interpret the results? (What was done? What was found? What does it mean? What suggestions are there for the creation of a health promotion intervention?)

## Discussion 8 and 2 replies

Discussion 8: Work Hard, Drink Hard

Have a look at the study, based on a meta-analysis, in https://slate.com/business/2015/08/study-says-work… Notice that the meta-analysis includes data from unpublished studies, as well as some published studies. Does that matter? In general, why is a meta-analysis necessary? Seems easy to measure working and drinking, right? Or not? And what about different samples? What other “what abouts” create variation across the studies included in the meta-analysis. In then end, are the results helpful or do you think they lack credibility?

REMEMBER: First, you must respond to the questions posed in the discussion. Once you’ve done that, take some time and reply to at least two classmates’ discussion posts. Each peer response will include at least one positive observation (i.e., what do you agree with, appreciate, or find interesting? why?) and at least one critique (what would you change? what is unclear, needs more support, or further explanation? why?). Remember, you must post 3 times (your original response and 2 responses to classmate’s comments) to receive full credit.

- 1. conduct a table with any fake data you want. 2. Tally the numbers, then Submit the table with
1. conduct a table with any fake data you want.

2. Tally the numbers, then Submit the table with the tally and the drawn distribution with well labeled axesdetail plz check the attchment “assignment(2).doc”

although there are 3 steps in that assignment, it’s just a single easy question, u can just put everything in one .doc document then submit if you want.

## https://brightspace.une.edu/d2l/common/viewFile.d2lfile/Database/MjQ3MjIyMA/birthweight_smoking_status.xls?ou=28356 Using the BIRTHWGT dataset provided in the SAS library, compare the infant birthweight mean by the mother’s smoking

https://brightspace.une.edu/d2l/common/viewFile.d2lfile/Database/MjQ3MjIyMA/birthweight_smoking_status.xls?ou=28356

Using the BIRTHWGT dataset provided in the SAS library, compare the infant birthweight mean by the mother’s smoking status. You should use the one-way ANOVA function. If there is a significant difference, how do the groups differ? Are there any potential problems with the methods you have proposed? Include all five hypothesis testing steps.

Additional questions:

Specific comparisons: How would you figure out which specific groups differ?

Potential problems: What are the potential problems with the method you have proposed to figure out which groups differ?Use ama citation

## Probability Estimates

Statistics Assignment Help Write this Application Essay after all previous Module work is finished. Students should open and read the attached document, write their essay as requested in the attached document, and submit the essay as an attachment to this assignment. Please note that the personal example noted in the attached is from Dr. Schwegler.

## Discussion 8 post and 2 replies

Discussion 8: Work Hard, Drink Hard

Have a look at the study, based on a meta-analysis, in https://slate.com/business/2015/08/study-says-work… Notice that the meta-analysis includes data from unpublished studies, as well as some published studies. Does that matter? In general, why is a meta-analysis necessary? Seems easy to measure working and drinking, right? Or not? And what about different samples? What other “what abouts” create variation across the studies included in the meta-analysis. In then end, are the results helpful or do you think they lack credibility?

REMEMBER: First, you must respond to the questions posed in the discussion. Once you’ve done that, take some time and reply to at least two classmates’ discussion posts. Each peer response will include at least one positive observation (i.e., what do you agree with, appreciate, or find interesting? why?) and at least one critique (what would you change? what is unclear, needs more support, or further explanation? why?). Remember, you must post 3 times (your original response and 2 responses to classmate’s comments) to receive full credit.

- Disccussion
This week we covered sampling, the act of surveying a small group of people to infer something about the larger population. For this discussion board, visit the Gallup Poll and pick one survey you found interesting then answer the following questions. You can filter by category or use the search function at the top right hand corner on the website to find a unique topic.

Title: Add a link to the survey using the link button above.

Date published: date

Summary: Summarize the main results of the survey.

Relevance: Why do you think the Gallup poll conducted this survey? How can it help businesses and society make decisions? Did any of the result surprise you?

Sample post attached

## Discussion

This week we covered sampling, the act of surveying a small group of people to infer something about the larger population. For this discussion board, visit the Gallup Poll and pick one survey you found interesting then answer the following questions. You can filter by category or use the search function at the top right hand corner on the website to find a unique topic.

Title: Add a link to the survey using the link button above.

Date published: date

Summary: Summarize the main results of the survey.

Relevance: Why do you think the Gallup poll conducted this survey? How can it help businesses and society make decisions? Did any of the result surprise you?

## minimal number of wires to maintain reliability

Statistics Assignment Help Problem #2 is computational and it should be rendered using the R-programming (no any

other language or tool). Please provide me not only with an answer, but also with the

source code of the program. You must copy and paste your code from the R console to

your paper and give me snapshots

Hint. See Example 5.3 on page 32 and a source code in

the notes.

problem 2 Suppose a parallel reliability system consists of cables of wires holding a bridge and

that one of them must have at least 133 wires. If the reliability of a single wire is

!Þ26 what is a minimal number of wires counted from 133 (or more) should that

cable have in order to maintain the reliability of the system to at least 94?

## Excel Statistics Dependent and Independent Contrasts

Before getting started with the job, i understand that some other classmates could have as well posted their assignments too. Please dont copy anything. Research Question: Is the relationship between FSA Science Score and GPA different for students in Math and Reading courses?

Independent contrast:FSA Science and GPA

Dependent Overlapping contrast: FSA-Math and GPA, and FSA-Reading and GPA

Dependent Non Overlapping contrast: FSA-Math and GPA and FSA-Reading and another Assessment

Requirements: not sure | .doc file

- Statistics Question
Read about hypothesis testing (2 attached files and 2 hyperlinks), now apply this knowledge by writing a paper that addresses the following:

Provide an example of a hypothesis where a one-tailed hypothesis test would be used.

Provide an example of a hypothesis where a two-tailed hypothesis test would be used.

If a researcher has set alpha at 0.05 for a two-tailed hypothesis test, what is the p-value required to reject the null hypothesis?

A researcher has set alpha at 0.05. When the researcher analyzes the data from the experiment using a software program, she obtains a p-value equal to 0.932. Based on this p-value, should the researcher reject the null hypothesis or fail to reject the null hypothesis? Please explain your answer.

A researcher has set alpha at 0.01. When the researcher analyzes the data from the experiment using a software program, he obtains a p-value equal to 0.04. Based on this p-value, should the researcher reject the null hypothesis or fail to reject the null hypothesis? Please explain your answer.

A researcher is interested in whether music played during an exam will improve exam performance. Students in one class listen to music during an exam and students in another class take the exam in silence. The researcher set alpha at 0.05. Test scores for both classes are compared using a statistical software program. The mean test score for the class that listened to music during the exam is 95, while the mean test score for the class that took the exam in silence is 82. The obtained p-value from the independent groups t-test is 0.02. Be sure to answer the following questions:State the null and alternative hypothesis.

Determine if this is a directional or non-directional test. Please explain your answer.

Establish the conclusion of this study based on the p-value and the means provided.

Describe the Type I error for this study.

Describe the Type II error for this study.Length:1-2 pages not including title and reference page

Your paper should demonstrate thoughtful consideration of the ideas and concepts presented in the course by providing new thoughts and insights relating directly to this topic. Your response should reflect scholarly writing and current APA standards.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC29961…

https://www.statsdirect.com/help/default.htm#basic…

## Statistical Analysis

Identify a peer-review study that uses a statistical analysis, such as regression, ANOVA, or t test.

In a report, describe the test and how it is applied to the study. Break down the test into smaller steps. Identify each step and describe the purpose of each step, and how it relates to the test as a whole. Finally, explain why this test was appropriate for the study purpose.

This paper should have at least 300 words, not including the title page or references.

This paper must follow APA formatting and citation guidelines, including:

Title page and Reference page

Essay should be double spaced

Use Times New Roman font, size 12

Any references should come from credible sources and use APA documentation.

Includes a highly developed viewpoint

Organize your paper with subheadings.

## qnt/275t week2 Standard Deviation and Variance: Population vs. Sample

Statistics Assignment Help One thing to be careful of when calculating the variance is that you divide by N when calculating the variance for a population; you divide by N – 1 when you have a sample. Below is a link to example that I think is straightforward. Once you have the variance, how do you come up with the standard deviation?

## Statistics

Question 1 (10 marks)

SIMPLE convenience store is arranging a promotion plan for the next season. The marketing team wants to

select 600 registered customers for a survey to get some ideas for the promotion. In the client’s database, an

identity number is assigned to each customer from 00001 to 30000 according to the registration date and time.

Furthermore, it is known that the number of registered customers in the 4 age groups are as below:

18 – 25: 4,000 customers

26 – 40: 12,000 customers

41 – 60: 9,000 customers

Above 60: 5,000 customers

(a) Find the population size.

(b) Describe the population.

(c) How many customers in each age group should be selected if the marketing team is adopting stratified

random sampling method based on age groups?

(d) Instead of using stratified random sampling method, systematic sampling method is suggested. Write

down the identity numbers of the next three customers given that the first chosen customer has identity

number 00016.

(e) What is the advantage of using systematic sampling method?

Question 2 (20 marks)

JOYFUL Fashion Company is reviewing the monthly sales in year 2021. The monthly sales (in millions) of

each month were as below:

Jan: $2.2 Jul: $3.4

Feb: $2.5 Aug: $3.7Mar: $2.0 Sep: $2.1

Apr: $2.8 Oct: $2.5

May: $1.9 Nov: $2.3

Jun: $0.9 Dec: $4.6

(a) Find the mean, mode, standard deviation, and range of the above data.

(b) Comment on the skewness of the above data. Explain your answer with the comparison of quartiles.

The JOYFUL Fashion Company will issue a Gold Membership to customers with accumulated spending in

January 2022 over 1% of 2021’s average monthly sales and a Platinum Membership to customers with

accumulated spending in January 2022 over 1% of the 80th percentile of 2021’s monthly sales.

(c) Mrs. Robinson has spent $27,450 in January 2022. Will she be qualified for the Gold Membership?

Will she be qualified for the Platinum Membership? Explain your answers.

(d) It is known that the average monthly sales from Jul 2020 to Dec 2020 were $1.9 millions. Find the

average monthly sales from July 2020 to Dec 2021.

(e) Are the JOYFUL Fashion Company sales increasing / decreasing? Explain your answer by comparing

the half-yearly average monthly sales. (i.e. Jul 2020 to Dec 2020; Jan 2021 to Jun 2021; Jul 2021 to Dec

2021)

- In a Word document, list the research question you used in Assignment 2. You may alter it if you
In a Word document, list the research question you used in Assignment 2. You may alter it if you were told there were errors or if it needed to be more specific (5 points).

Take a screenshot (not a picture) of both the data view and variable view of cases you have entered (show all) into SPSS from Assignment 2. This should only be two screen shots. Now paste the screen shots under Number 1 above (15 points for this step). If you were told you had errors in Assignment 2, and some people did, fix them before getting to this step or you will lose all 15 points. If you had no errors, just cut and paste. This must be corrected if you did not have the correct variables, or the below will be incorrect.

Run one independent sample t-test on the appropriate variables. Cut and paste that t-test table under the above screen shots. Interpret the results – the relationship between the variables you chose in a minimum of 3 sentences. Tell me what this means about your variables you analyzed in this step (20 points for this step).

Run an ANOVA on the appropriate variables. Cut and paste the ANOVA table under the above. Interpret the results – the relationship between the variables in a minimum of 3 sentences. Tell me what this means about your variables you analyzed in this step (20 points for this step).

Explain the p value (significance) and what it means about the relationship for both tests above. Use a minimum of 2 sentences per p value, you should have 4 sentences total(15 points).

Run a partial correlation with three variables, one of them is your moderating variable. Cut and paste the tables under the above p value question. Interpret your results in a minimum of three sentences. (20 points)

Save the Word document by your last names and Assignment 3 (5 points). Submit word document to the assignment dropbox by the due date.I included assignment 2 in the files

## Statistics Question

Need a confident tutor that is skilled in statistics. Working on an assignment and need a detailed solution for my study guide. Please review the attached and if you sure you can earn a good grade, go a head. I’ll have to submit for a grade so please do not accept assignment unless your comfortable with the content.

## Social research methods

Statistics Assignment Help Open the course codes list GSS variable codes.docx. Look over the brief descriptions of this small snapshot of GSS variables. Choose a variable that you would be interested in learning more about. For example: let’s say you want to know what factors might explain satisfaction with one’s financial situation (SATFIN). Write a sentence or two explaining what interests you about that variable in terms of a dependent variable.

Next, choose three additional variables that could be used as independent variables to explain your dependent variable. For example, you might want to look more closely at the number of hours people work per week (HRS1), number of years spent in school (EDUC), and the total wealth of the respondent (WEALTH). Write a couple sentences explaining the logic behind your choice of these three independent variables.

Visit https://gssdataexplorer.norc.org/variables/vfilter. For each of your four variables (one dependent and three independent), use the Control/Command F search function to find more information about how these indicators were posed to respondents, and what their possible responses could be. Report a basic description for each variable.Warning: this codebook covers 1972-2021, so there are many variables listed for questions that were not asked in our data set (which covers 2016-21). Be sure to pick variables included in our data set.For each of your four variables, identify whether it is nominal, ordinal, or continuous (scale). This will depend on how the data are represented in the codebook. Note: for the purposes of this exercise, you can ignore “don’t know” and “no answer” categories.

Download GSS 16-21 JASP.csv and upload in JASP*. Construct descriptive tables for your variables.For continuous (scale) variables, you can use the basic Descriptive table. Under the “Statistics” dropdown menu, select “Median”.

For nominal and ordinal variables, select the “Frequency tables” box.

Note: You will need to run separate analyses for continuous vs nominal/ordinal.Write a sentence or two interpreting your descriptive tables for each variable.

*First download the data set from Canvas. Do NOT click on the file. Second, open JASP. Click on the menu button (blue lines) > Open > Computer > Browse > Downloads > the file the downloaded.

## Statistics Question

MUST KNOW SAS OR DONT BID ON IT. the instructions are complete and in the attachment along the excel file for the data. Please follow the steps completely and do the assignment perfectly. Main answers should be presented in a word document.

- 2 small questions use as the book says which I will attach below
6.12 It is estimated that 66% of new businesses fail during the first ten years. What is theprobability that in a sample of 30 startups, more than half will fail in the first ten years? page 94

6.15 An online retailer claims that 90% of all orders are shipped within 12 hours. A consumer (page 95)group placed 98 orders of different sizes and at different times of day.a. What is the probability that at least 80% of these orders will be shipped within 12 hours?b. What is the probability that less than 95% of these orders will be shipped within 12 hours?

## Lab #3: Analyzing the Association between Variables

Make a copy of the Lab #3: Analyzing the Association between Variables (????????) activity under the File menu and share it with your group members. Complete the activity, fully answering the questions and upload a copy of your document as a PDF on Canvas. Only one person per group needs to submit the assignment.

## Z Scores: Location of Scores and Standardized Distributions

Statistics Assignment Help Students should use the PowerPoint slides for this Module’s chapters to identify the Key Concept. There is one Key Concept identified by the professor of the course and labeled with the terms “key concept” in the slides that students must locate and summarize each week. Note, there is not one Key Concept per slide deck. Instead, there is one Key Concept within all slides for each Module that students must locate.

For the assignment, locate the Key Concept identified in the chapter(s) PPT slides. Briefly explain, in 8-12 sentences, the Key Concept using complete sentences and your own words. (Plagiarized or quoted explanations will not receive credit.)

## Statistics Question

It is time to submit your final project. Throughout the course you have been applying the specific skills covered in the course to your article analysis. For this task, create a polished paper that incorporates all the feedback you received from your peers and your instructor throughout the course. I have also submitted the article and Final Project Guidelines and Rubric.

- lab 3 Analyzing the Association between Variables
Miami University | College of Arts and Science | Department of Statistics | Spring 2021-22

Course Title: Statistics | Subject and Course Number: STA 261

Lab 3: Analyzing the Association between Variables

Due date: Thursday, 02/17/2022

Total: 50 points

Your Section:

Table number:

Name of students: Write down the name of students in your table who equally contributed in this lab:Learning Objectives: Lab 3 will

Help you to determine if there is an association between two categorical variables

Develop your skills to interpret the estimated regression parameters and the coefficient of determination

Help you to understand residuals in regression analysis

Prepare you for the test

Help you solve some of the homework problems

Assist you in exploring the resources available in the class (such as, peers, instructor, graduate assistants, etc.)

Submission guidelines:

Make a copy under the File menu — share with group mates (give editing access). To share with others, click the Share button in the top right and add in email addresses, then click Done

Please write all answers in another color (red is preferred)

Only one person per table needs to submit a pdf document of the lab (File → Download → PDF Document, then submit through Canvas)Question 1: Vehicular Accidents The data were collected in 2019 by the National Highway Traffic Safety Administration. The Vehicular Accidents 2019 dataset can be found on our StatCrunch group STA 261 Spring 2022. This data set compiles all of the accidents in 2019 and includes various variables that describe the details of the crash. We are interested in determining which variables, if any, have an association with the type of injuries sustained from the accident. (30 points)

Variables Used:

Max_Injury = A description of the maximum injury sustained in the crashNo injuries implies no persons were injured

Possible Injuries implies at least one person involved may have suffered an injury

Minor Injuries implies at least one person suffered minor injuries

Serious Injuries implies at least one person was severely injured in the crash

Fatalities implies at least one person died as a result of the crashAlcohol_Involved = A Yes/No indicating if alcohol was involved in the crash.

AM_PM = indicates the time of the accident; AM or PM

Speeding_involved = A Yes/No indicating if a vehicle involved in the crash was speeding

Accident_Type = indicates if the accident was a single car or multi-car accident

Number_Injured = Number of persons involved in the crash that were injured in some way.Part I: What is an observational unit within this dataset?

Answer:Part II: Construct a contingency table that shows the conditional proportions of type of injuries, given alcohol consumption. Interpret

(5 points total, 1, point for explanatory/response variable, 2 points for creating a table, 2 points for interpretation)

What is the explanatory variable? What is the dependent (or response) variable?Answer:

Paste your contingency table here:Interpretation:

Part III: Is there a relationship between the time of the accident, AM or PM and type of injuries in vehicle accidents? Make a comparative bar graph that compares the two distributions. Interpret.

(5 points total, 1, point for explanatory/response variable, 2 points for creating a plot, 2 points for interpretation)

What is the explanatory variable? What is the dependent (or response) variable?Answer:

Paste your comparative bar graph here:Interpretation:

Part IV: Is there a relationship between whether speeding was involved in the accident (Speeding_involvement) or not and type of injuries in vehicle accidents? Make a segmented bar graph that compares the two distributions. Interpret.

(5 points total, 1, point for explanatory/response variable, 2 points for creating a plot, 2 points for interpretation)

What is the explanatory variable? What is the dependent (or response) variable?Answer:

Paste your segmented bar graph here:

Interpretation:

Part V: Is there a relationship between whether it was a single or multi-car accident (Accident_Type) and type of injuries in vehicle accidents? Make a contingency table OR a comparative bar graph OR a segmented bar graph that compares the two distributions. Interpret.

(5 points total, 1, point for explanatory/response variable, 2 points for creating a plot, 2 points for interpretation)

What is the explanatory variable? What is the dependent (or response) variable?Answer:

Paste your plot here:

Interpretation:

Part VI: Does the maximum speed of the accident differ when alcohol is involved? Create a comparative chart and describe the distributions. (Hint: don’t forget your SOCS!)(5 points)

Comparative Plots:Interpretation:

Part VII: Does the maximum speed differ based on the time of the accident(AM vs. PM)? Create a comparative chart and describe the distributions. (Hint: don’t forget your SOCS!)(5 points)

Comparative Plots:Interpretation:

Question 2: Fire Damage A fire insurance company is interested in investigating the effect of the distance between the burning house and the nearest fire station (in miles) on the amount of fire damage (in thousands of dollars) in major residential fires. A sample of 15 recent fires in a suburb is selected. The Fire dataset can be found in our StatCrunch group STA 261 Spring 2022. (20 points)

Source: McClave, J.## 2 discussions post and 4 replies

Discussion 6: Could/Should This Type of Study Include Randomization to Condition?

Have a look at the article (https://www.goodtherapy.org/blog/study-do-self-help-programs-work-as-well-as-therapy-0828171) about whether self-help is as effective as professional therapy. (The article includes a link to the original study, but no need to read it.) Discuss whether and how a study of this type could be a “true” experiment (which includes randomization to condition). Notice, too, the experimental stimuli for the self-help condition, which is either a book or an online program. There are a few wrinkles, which are explained near the end of the article, but the bottom line is whether we should trust the results given design issues. Should we? And/or how would you design a study to test the hypothesis that professional therapy is more effective than self-help? (Note the directional hypothesis.)

REMEMBER: First, you must respond to the question posed in the discussion. Once you’ve done that, take some time and reply to at least two classmates’ discussion posts. Each peer response will include at least one positive observation (i.e., what do you agree with, appreciate, or find interesting? why?) and at least one critique (what would you change? what is unclear, needs more support, or further explanation? why?). Remember, you must post 3 times (your original response and 2 responses to classmate’s comments) to receive full credit.Discussion 7: Response Rates Matter. Or Not?

Recent election polls in the US and UK have been fairly inaccurate–the 2020 US presidential election might be the worst of the lot. Read this article (https://www.politico.com/news/2021/07/18/pollsters-2020-polls-all-wrong-500050). Response rates have been pretty poor and/or the “wrong” sampling frames have been used. Or the wrong questions were asked. What response rate would you be comfortable with assuming a useful sampling frame? Notice that we can determine if a pool is accurate by comparing it to election results. If a poll is off, is the response rate and/or sampling frame always the culprit? How about a social scientific survey? How can we trust the results if we don’t have a population to compare it to?

REMEMBER: First, you must respond to the questions posed in the discussion. Once you’ve done that, take some time and reply to at least two classmates’ discussion posts. Each peer response will include at least one positive observation (i.e., what do you agree with, appreciate, or find interesting? why?) and at least one critique (what would you change? what is unclear, needs more support, or further explanation? why?). Remember, you must post 3 times (your original response and 2 responses to classmate’s comments) to receive full credit.

No specific length. Should just meet requirements. I need discussion post and replies done by est midnight, so please send discussion posts ASAP so I can post and send posts for replies. I’m putting 13 hours just so I can select tutor

## Statistics

Statistics Assignment Help https://astatsa.com/OneWay_Anova_with_TukeyHSD/ link

2 https://ucumberlands.blackboard.com/bbcswebdav/pid… Link 3 https://www.socscistatistics.com/

no 4.These are the supporting links that will guide you to work with JASP software

No 5 Remember that JASP will open text files. There is NO need to use Excel or any other software for this assignment.

## short_run supplies

The short-run supply curve for a firm in a perfectly competitive market is:

A. likely to slope downward.

B. determined by forces external to the firm.

C. horizontal.

D. the portion of its marginal cost curve that lies above its average variable cost.

- qnt/275t wk 1 discussion reply 2
In my business, we sell products to a customer that makes heavy use of forecasting to make decisions about order quantities, among other things. The make/hold quantity and the associated pricing to make that quantity are based on the annual expected usage using forecasting reports. For example, the price per thousand parts is rather high when the quantity is only 1,000; compared to a lower price per thousand if the expected annual usage is 100,000. Therefore, the customer makes good use of these reports to save money in the long run. What are your experiences with forecasting?

## Statistics Question

NotesRead a quantitative paper(bivariate regression) and summarise(250words):What methods does the paper use?What are the findings of the paper?What might you have done differently if you were doing this paper?What didn’t you understand / what flummoxed you?Did you like the paper, and why?

I have attached an article to use (

It is a multivariate regression paper but still comfortable for me)

## Health Operation Management

Statistics Assignment Help (30 points) Problem (Exercise) 1, page 250, from your textbook.

(20 points). Problem (Exercise) 3, page 319, from your textbook.

(50 points) ****Two of the nurses (Mary and Jane) from the textbook example Riverview Clinic Urgent Care Staffing Using Linear Programming (pages 326-330) have decided to work part-time rather than full-time. They would like to work only two consecutive days per week. Because they would be part-time employees, salary, and benefits per nurse-day for these nurses would be reduced to $160 on weekdays and $220 on weekend days. Riverview could hire an additional full-time nurse if needed. Set up the problem in Excel to reflect the possibility of allowing these two nurses to work part-time.

Using Excel Solver, determine how many nurses should be assigned to each possible schedule. Riverview’s goal is still to minimize weekly salary expenses.

Should Riverview agree with Mary and Jane’s request to work part-time? Why?

Should Riverview hire an additional full-time nurse? Why?

Assuming that part-time nurses and any new hire will accept any schedule and preferences (and preferences scores) for the remainder of the nurses are the same (as in the textbook example), what new schedule would you recommend for each nurse? You should use Excel Solver to answer this question.For part a., you only have to construct an X-bar chart using the standard deviation of the observations to estimate the population standard deviation and calculate the control limits. Parts b., c., and d. are the same as in the textbook.

You have to submit the Excel file with the problem setup, and you should also create an “Answers” sheet (within the same excel file) for the answers to the questions asked in the problem.

This problem has five questions, and you should submit for grading the answers to those five questions and the methods you used to get the solutions.You have to submit the Excel file with the problem so that I can check your setup for the problem and the Solver. Please make sure you have two different Excel sheets for parts a. and e., as Excel only allows one Solver per sheet. You should also create an “Answers” sheet (within the same excel file) for the answers to the questions asked in the problem.

****Given that this problem is a continuation of the textbook example (pages 326-330), make sure you read the textbook before you start working on the homework problem.Homework 1 – Grading rubric

Items/criteria

Max number of points

Problem 1.

(Chapter 9)

Exercise 1, page 250

Construct the X-bar chart

10Is the process in control? Explanation of the answer given.

5Calculate Cp and Cpk if anytime over 100 minute is unacceptable.

10Next steps for the lab manager.

5

Problem 2.

(Chapter 11)

Exercise 3, page 319

Capacity utilization of the lab

4 (2 for formula and 2 for the final answer)Average number of blood samples in the lab

4 (2 for formula and 2 for the final answer)Average time that a sample waits in the queue

4 (2 for formula and 2 for the final answer)Average number of blood samples waiting for testing

4 (2 for formula and 2 for the final answer)Average time that a blood sample spends in the lab

4 (2 for formula and 2 for the final answer)

Problem 3.

(Chapter 12)Set up the problem correctly in Excel

15Set up the Solver objective function and constraints correctly

10Should Riverview agree with Mary and Jane’s request to work part-time? Why?

5Should Riverview UCC hire an additional full-time nurse? Why?

5New schedule for each nurse (with the Solver setup)

15## Homework 3

Question 1

20 ptsPLEASE NOTE:

YOUR FIRST AND LAST NAME MUST BE AT THE TOP OF YOUR DOCUMENT AND

THE WORK MUST BE IN YOUR HANDWRITING (that I see on your homework assignments).

Members of a certain college

statistics class were selected, and asked to indicate how many hours

during the previous month they had spent reading (for pleasure, not

school work). The data are as follows:

25, 25, 24, 26, 23, 23, 22, 25, 24, 22, 23, 24, 26

On a piece of paper, CREATE A FREQUENCY DISTRIBUTION (per the instructions you learned in class).

(4 points)

____

For the data presented in the frequency distribution you just created, CREATE A FREQUENCY POLYGON (per the instructions you learned in class) on a piece of GRAPH PAPER.

(5 points)

______

A researcher surveyed respondents

regarding pet ownership, determining whether they were a pet owner or

not a pet owner. The results are as follows (“P” represents a pet owner

and “NP” represents someone with no pets):

P, P, NP, P, P, P, NP, NP, NP, NP, P, P, P, P, P, P, NP, P, NP, P, P, NP, NP, P, NP, P, P, P

Create a Frequency Distribution and include a column for relative frequency (%) — (per the instructions you learned in class).

Create the frequency distribution with the relative frequency (%) column on your own paper (you do NOT need to show your calculations, and definitely do NOT show you calculations within your final product).

(5 points)

_______

Calculate the range and the mean for the following set of scores. Also, use the deviation method to calculate the deviation scores, the variance and standard deviation. SHOW all your work, round to two decimal places. State the symbol for each.

Scores: 6, 9, 10, 15

Remember to show all your work (for the deviation method) and remember to show the chart like we learned to do in class!)

After you show the CHART and SHOW ALL YOUR WORK, then state the following:

4a. Range Answer _________ Range Symbol ____

4b. Mean Answer_________

4c. Variance Answer __________ Variance Symbol ____

4d. Standard Deviation Answer ______________ Standard Deviation Symbol ____

(6 points)

After you have worked these four questions, turn all your work into ONE PDF, just as you do for homework assignments, and upload the pdf here.

- Much has been written about the relationship between students’ SAT test scores and their family’s income. Generally speaking, there
Much has been written about the relationship between students’ SAT test scores and their family’s income. Generally speaking, there is a strong positive correlation between income and SAT scores. Consider and discuss the following questions as you respond: What does this correlation tell you?

Is this correlation evidence that having a high family income causes one to have high SAT scores?

Is this correlation evidence that high SAT scores cause higher income? Or does this tell you something else? Explain your answer.

Explain why correlation alone is rarely sufficient to demonstrate cause.

Provide a personal example of two variables that may be correlated but not have a cause and effect relationship. Identify what type of bivariate correlation is involved, based on the measurement scales of the variables## Time Series Statistics Questions

For statistical inference purposes you can use an?(significance) level of 0.05.For

each case, please clearly state your hypotheses, rejection criteria, and conclusionwhen needed.1. Consider a random walk model with no drift as follows?? =???1 ??where ?(??)=0,?(??)=?2 and ??? are uncorrelated.Show how you can obtain the autocorrelation function at lag k, denoted by ?? (Recallthat we have obtained the autocovariance function for a random walk in-class).2. Consider an AR model of order 2 as follows?? =?1???1 ?2???2 ??where ?(??)=0,?(??)=?2 and ??? are uncorrelated.- Show how you can obtain ?(??)- Show how you can obtain the autocovariance and autocorrelation functions at lagk as a function of ?1, ?2 autocovariances, and autocorrelations at lags k-1 and k-2. (Hint: you can take the above AR(2) equation and multiply both sides by ????and take the expectation to obtain ?(??,????)).3. Write a simulation sampler for a first order AR process for ?1 =0.5 (similar to ourrandom walk sampler from Set 3, rwsim.R). Please use a seed of 1 for your sampler.Obtain the time series, acf and pacf plots of the simulated series. Estimate an AR(1)model using the simulated series and investigate if the residuals are white noise.4. Consider the monthly price of gas in the US (Jan 1974-Dec 1982) given by gas.txt.a) Obtain the time series plot. Does this look like a stationary series?b) Obtain the ACF and the PACF of the series. Does this look like a random walk oran AR process?c) Obtain the ACF and the PACF of the first difference of the series. Does this looklike a random walk or an AR process?d) Estimate a random walk model and a suitable AR model on the differenced series.Test if the residuals are white noise for each case. Discuss the significance of themodel parameters for each model. Compare the AIC estimates. What do youobserve?e) Obtain a plot of the actual data versus your fitted random walk and AR modelsfrom part d.

Requirements: Math question | .doc file?

## HW statistic

Statistics Assignment Help There are 2 assignments:

1. In the Feeback file, please provide feedback to a student with a minimum of 80 words.

2. In the Tech_Project_1 file, please help answer 3 problems in your own words.

Please use vocabulary and techniques from the lecture to answer those questions.

Thank you

## A statistics’ homework. Don’t do question 7. The link for problem 1: https://www.economist.com/graphic-detail/2021/08/20/so-far-ending-pandemic-unemployment-aid-has-not-yielded-extra-jobs The link for problem 2: https://public.tableau.com/app/profile/klaus.schulte/viz/TotalAnnualLossofBeeColoniesintheUS/Dashboard1

A statistics’ homework. Don’t do question 7.

The link for problem 1: https://www.economist.com/graphic-detail/2021/08/20/so-far-ending-pandemic-unemployment-aid-has-not-yielded-extra-jobs

The link for problem 2: https://public.tableau.com/app/profile/klaus.schulte/viz/TotalAnnualLossofBeeColoniesintheUS/Dashboard1

The link for problem 3: https://computationalcommunication.org/ccr/article/view/86

The link for problem 4: https://www.social-searcher.com/

For question 5, I have attached the colab instructions pdf.

The link for question 6: https://math.typeit.org/

- Normal Distribution – CCJ Homework
Please assist with simple statistical questions. All data is available and you just need to compute the z score and also construct the normal distribution and plot the distribution along with the mean. All instructions are available, see attached.

Please do not take assignment if you are not competent in statistics.

## Please submit 2 files: Excel sheet with work and word document with essay answers. Please use the textbook chapter

Please submit 2 files: Excel sheet with work and word document with essay answers. Please use the textbook chapter I provided as the only reference needed and only cite it one time. Here are the details:

The Lazer Company has a contract to produce a part for Boeing Corporation that must have an average diameter of 6 inches and a standard deviation of 0.10 inch. The Lazer Company has developed a process that will meet the specifications with respect to the standard deviation, but it is still trying to meet the mean specifications. A test run (considered a random sample) of parts was produced, and the company wishes to determine whether this latest process that produced the sample will produce parts meeting the requirement of an average diameter equal to 6 inches.Use Excel to:

1. Construct the appropriate null and alternative hypotheses with correct parameters.

2. Develop the decision rule assuming that the sample size is 200 parts and the significance level is 0.01.In a Word document:

1. Recommend what the Lazer Company should conclude if the sample mean diameter for the 200 parts is 6.03 inches.

2. Submit your recommendations in a Word document and attach your Excel file.

## Topic Often times there are so many variables involved in a study that it is difficult to distinguish “causes”.

Statistics Assignment Help Topic

Often times there are so many variables involved in a study that it is difficult to distinguish “causes”. For example, there is the belief that “smoking causes lung cancer”. I tend to believe this myself but my own mother was a chain smoker and never developed lung cancer. There are many other variables that might affect the outcome of lung cancer such as working conditions, heredity, diet, etc.

It is too hard to account for every “factor” in these circumstances so we might just focus on one such as studying lung cancer patients and asking them if they smoked or not.

In this discussion, you are going to come up with some example of the binomial probability distribution. Remember our definition:

Def: Binomial probability distribution

1. procedure has fixed # of trials

2. trials must be independent

3. each trial must have all outcomes classified into 2 categories

4. probabilities must remain constant for each trialFor example, we interview 50 lung cancer patients (fixed # of trials). They come from all occupations and parts of the state (independence). Either they smoked or did not smoke (2 categories). If 15% of the population smokes then the probability would remain constant for each trial equaling 15% or 0.15. This would meet the conditions for a binomial probability distribution.

Come up with your own examples of a binomial probability distribution. It can be made up, you do not need actual numbers.

## stata Problem Set

Using our US Macro data, do the following (make sure your year and quarter variables are destringed like we did last week)

a. First, run a hypothesis test looking at if the average unemployment rate (over all years) is different than 6. Write your null and alternative hypotheses. Interpret your results. Do they make sense to you?

b. Now run a hypothesis test the average unemployment rate from 2008 – 2010 is different than 6. Write your null and alternative hypotheses. Interpret your results. Do they make sense to you?

c. What is the 95% confidence interval for the unemployment rate between 2008