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# Using R console analysis to solve the following questions

1) 8.S.20 (Computer exercise) In a study of hypnotic suggestion, 16 male volunteers were randomly allocated to an experimental group and a control group. Each subject participated in a two-phase experimental session. In the first phase, respiration was measured while the subject was awake and at rest. (These measurements were also described in Exercises 7.5.6 and 7.10.4.) In the second phase, the subject was told to imagine that he was performing muscular work, and respiration was measured again.
For subjects in the experimental group, hypnosis was induced between the first and second phases; thus, the suggestion to imagine muscular work was “hypnotic suggestion” for control subjects. The accompany table shows the measurements of total ventilation (liters of air per minute per square meter of body area) for all 16 subjects.
(a) Use a test to compare the mean resting values in the two groups. Use a non-directional alternative and let . This is the same as Exercise 7.5.6(a).
(b) Use suitable paired and unpaired test to investigate (i) the response of the experimental group to suggestion; (ii) the response of the control group to suggestion; (iii) the difference between the responses of the experimental and control groups. Use directional alternatives (suggestion increases ventilation, and hypnotic suggestion increases it more than waking suggestion) and let for each test.
EXPERIMENTAL GROUP
CONTROL GROUP
SUBJECT
REST
WORK
SUBJECT
REST
WORK
1
5.74
6.24
9
6.21
5.50
2
6.79
9.07
10
4.50
4.64
3
5.32
7.77
11
4.86
4.61
4
7.18
16.46
12
4.78
3.78
5
5.60
6.95
13
4.79
5.41
6
6.06
8.14
14
5.70
5.32
7
6.32
11.72
15
5.41
4.54
8
6.34
8.06
16
6.08
5.98
(c) Repeat the investigations of part (b) using suitable nonparametric tests (sign and Wilcoxon-Mann Whitney tests).
(d) Using suitable graphs to investigate the reasonableness of the normality condition underlying the tests of part (b). How does this investigation shed light on the discrepancies between the results of parts (b) and (c)?
2) 9.S.10: As part of the study of the inheritance pattern of cowpea plants, geneticists classified the plants in one experiment according to weather the plants had one leaf or three. The data follow:
Number of leaves
1
3
Number of plants
74
61
Test the null hypothesis that the two types of plants occur with equal probabilities. Use a nondirectional alternative and let α=0.05.
3) 10.8.1: As part of a study of risk factors for stoke, 155 women who had experienced a hemorrhagic stroke (cases) were interviewed. For each case, a control was chosen who had not experienced a stroke; the control was matched to the case by neighborhood of residence, age, and race. Each woman was asked whether she used oral contraceptives. The data for the 155 pairs are displayed in the table. “Yes” and “No” refer to use of oral contraceptives.
Control

Case
No
Yes
No
107
30
Yes
13
5
To test for association between oral contraceptive use and stroke, consider only the 43 discordant pairs (pairs who answered differently) and test the hypothesis that a discordant pair is equally likely to be “yes/no” or “no/yes”. Use McNemar’s test to test the hypothesis that having a stroke is independent of use of oral contraceptives against a nondirectional alternative at α=0.05.
4) 10.S.6: Dissert Lizards regulate their body temperature by basking in the sun or moving into the shade, as required. Normally the lizards will maintain a daytime temperature of about 38ᴏC. When they are sick, however, they maintain a temperature about 2 to 4 degree higher – that is, a “fever”. In an experiment to see whether this fever might be beneficial, lizards were given a bacterial infection; then 36 of the animals were prevented from developing a fever by keeping them in a 38ᴏC enclosure, while 12 animals were kept at a temperature of 40ᴏC. The following table describes the mortality after 24 hours. How strongly do these results support the hypothesis that fever has survival value? Use Fisher’s exact test against a directional alternative. Let α=0.05.

38ᴏ
40ᴏ
Died
18
2
Survived
18
10
Total
36
12
5) Consider the data from Exercise10.S.6. Analyze these data with a chi-square test. Let α=0.05.

## Initial Survey Design

This is the first component of your course project.
Before rushing out to collect data, it is important to clearly define what you are trying to accomplish and what you are trying to answer from your study. This assignment provides an opportunity for you to demonstrate your ability to define your goals and begin to formulate a data collection strategy to meet those goals.
Using the Initial Survey Design Template [DOC], identify a topic of interest in your personal or professional life. Explain your reasons for selecting the topic and your thoughts about the study design. As you fill out the template, keep in mind that surveys are usually done to answer some sort of question. This topic could be something based on your professional activities or your personal interests. In other words, you get to make the subject of the statistical analysis your own.
Make sure you have watched the Week 1 Project Video. Your instructor walks you through the course project and the template for this assignment:
Address the following in the template:
Describe the topic of your survey.
Explain why the topic is important. (How might the results of the study be used in your personal or professional life?)
Identify and describe the potential variables to be included in data gathering.
Define the population to be studied.
Explain why this is the best population for your study.

## As a student at UMGC, you have been asked to join a fictional committee that will partner with new

Statistics Assignment Help As a student at UMGC, you have been asked to join a fictional committee that will partner with new students in various programs of study. You will work alongside UMGC students from other programs to coordinate a weekend event that includes a tour of the campus, an informal meeting with students who are interested in your program, and a lunch-and-learn session with a panel of experts from various fields.

During the meeting with students who may be interested in your field of study, one student mentions that a program requirement is statistics. That student asks you why statistics is needed in this program. Do research online and create a thoughtful reply to the student, including a list of at least 3 specific ways in which statistics is used in your field. Include references from the online sources.

My field of study is Social Science please apply this to how statistics may play a role in the assignment noted above.

## Business and Economic Statistic Case Study 1

PRIORITISE TOP TUTOR
The a-s-s-e-s-s-m-e-n-t will be less than 1500 words long. Please see the questions shown in the screenshot.
Case Study 1: 10/1/2022 ~ 21/1/2022Case Study 2: 24/1/2022 ~ 4/2/2022
I will send you all info after being hired, eg PPTs, student access etc. Please send a draft in 12hrs -1 day time, day 2, and day 3 as well. Will need to draft some questions to ask the teacher and revise base on feedback (Send bk ard in 1 day max)

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