Exercise 10.47 in Chapter 10 discussed a pilot study of people who suffer from abnormally high blood pressure. A medical researcher decides to test her belief that walking briskly for at least half an hour a day has the effect of lowering blood pressure. She randomly samples three of her patients who have high blood pressure. She measures their systolic blood pressure initially and then again a month later after they participate in her exercise program. The table shows the results. Show how to analyze the data with the sign test. State the hypotheses, find the P-value, and interpret.
Answer to relevant QuestionsA historian wants to estimate the average age at marriage of women in New England in the early 19th century. Within her state archives she finds marriage records for the years 1800– 1820, which she treats as a sample of ...Refer to the previous exercise. The analysis there did not take into account the size of the change in blood pressure. Show how to do this with the Wilcoxon signed-ranks test. a. State the hypotheses for that test, for the ...In Exercise 15.8, the telephone holding times for Muzak and classical music were Muzak 0, 1, 4, 6, 3 Classical 13, 9, 8, 15, 7 a. For comparing these two groups with the Wilcoxon test, report the ranks and the mean rank for ...The Georgia Student Survey data file has data on college GPA and high school GPA for 59 University of Georgia students. a. If you wanted to use a nonparametric test to check your friend’s prediction that high school GPAs ...Smoking during pregnancy is a known cause of reduced infant birth weight and other issues that can affect the delivery and mortality. Despite this strong evidence, women who smoke find it difficult to quit even when they are ...
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