R5.25. Insulin and diet A study published in the Journal of theAmerican Medical Association examined people to see ifthey showed any signs of IRS (insulin resistance syndrome)involving major risk factors for Type 2 diabetes and heartdisease. Among 102 subjects who consumed dairy productsmore than 35 times per week, 24 were identified with IRS.In comparison, IRS was identified in 85 of 190 individualswith the lowest dairy consumption, fewer than 10 times perweek.a) Is this strong evidence that IRS risk is different in peoplewho frequently consume dairy products than in thosewho do not?b) Does this prove that dairy consumption influences thedevelopment of IRS? Explain.

The question is about hypo. testing for difference between two prop. Given : No. of subjects who…

Answered: R5.25. Insulin and diet A study…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained. High stress 20 23 18 19 22 Relatively stress free 26 31 25 26 30 Assume you are evaluating H0 using the t test. The df for determining tcrit are _________.
2. 90 male volunteers are randomly assigned to three different treatment programs designed to produce a weight loss by focusing on either diet, exercise, or the modification of eating behaviour. Weight changes were recorded, to the nearest pound, for all participants who completed the two-month experiment. Positive scores signify a weight drop; negative scores, a weight gain (in kg). Diet Exercise Modification of eating behaviour 9.07 -0.15 7.44 2.12 -4.98 8.53 6.65 8.31 10.48 9.14 -9.99 -9.08 8.03 -9.96 4.62 -1.09 0.18 5.33 9.03 11.04 -7.84 12.03 12.04 9.89 8.43 10.12 9.00 10.51 7.17 7.55 0.15 2.18 8.63 8.91 6.38 6.70 8.63 10.86 12.30 11.02 14.44 8.94 6.07 0.43 2.70 0.11 11.16 9.03 9.99 -5.05 9.86 11.73 11.42 8.49 10.05 10.40 2.52 0.68 1.39 -2.19 9.13 10.31 6.83 12.68 9.43 10.24 11.42 11.97 9.98 -9.11 -1.28 4.51 -4.10 -0.98 | 12.03 9.67 8.67 5.93 4.58 3.39 -3.02 0.48 | 9.10 9.52 8.75 10.61 2.22 0.13 11.33 11.76 a. Develop a box-plot graph for the above data. Write the interpretation…
#32). Please show work and answers, need to see how it’s done. Thank you!
In a study of 301 Hispanic women living in San Antonia, Texas, one variable of interest was the percentage of subjects with impaired fasting glucose (IFG). IFG refers to a metabolic stage intermediate between normal glucose homeostasis and diabetes. In the study, 24 women were classified in the IFG stage. The article cites population estimates for IFG among Hispanic women in Texas as 6.3%. Is there sufficient evidence to indicate the population of Hispanic women in San Antonio has a prevalence of IFG higher than 6.3%? Use 95% confidence level and the p -value method to form your conclusion. Choose the correct null and alternative hypothesis.
Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the results from other research suggest that the antioxidants in foods such as blueberries may reduce and even reverse these age-related declines (Joseph et al., 1999). To examine this phenomenon, suppose that a researcher obtains a sample of n = 16 adults who are between the ages of 65 and 75. The researcher uses a standardized test to measure cognitive performance for each individual. The participants then begin a 2-month program in which they receive daily doses of a blueberry supplement. At the end of the 2-month period, the researcher again measures cognitive performance for each participant. The results show an average increase in performance of MD = 7.4 with SS = 1215. Does this result support the conclusion that the antioxidant supplement has a significant effect on cognitive performance? Use a two-tailed test with α = .05. Show your computations.
A team of epidemiologists at the Mayo Clinic wanted to find whether there is an association between obesity and cardiovascular disease (CVD). They conducted a prospective cohort study following obese and non-obese individuals who were free of CVD at the beginning of study for five years. The investigators were also interested in assessing age as a potential confounder, effect modifier, or both. Use the data below to answer the accompanying questions. CVD No CVD Total Obese 10 90 100 Not Obese 35 465 500 Total 45 555 600 CVD No CVD Total Obese 36 164 200 Not Obese 25 175 200 Total 61 339 400 1. Compute the appropriate measure of association for those who were less than age 50. 2. Compute the appropriate measure of association for those who were older or equal to age 50. 3. Compute the crude measure of association? 4. List three attributes that age must satisfy before it could…

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