We always need to look closely at our data. Sometimes we find things that are hard to explain. Look closely at the data in Exercise 13.6; what attracts your attention?
Answer to relevant QuestionsIn Exercise 13.1 we had paired data because we had a response from both the husband and the wife within a married couple. Suppose that instead of using married couples we just took a large group of people and asked them to ...Using the data in Appendix D, use a t test to compare ADDSC scores of males and females. Demonstrate that, because we have equal sample sizes, I would have arrived at the same answer in Section 14.10 if I had not pooled the variances, although the degrees of freedom would probably differ. Suppose the investigator referred to in Exercise 15.9 decided that instead of running one group and comparing it against µ 0 = 5.8, she would run two groups (one with and one without lesions). She would still expect the ...What is your subjective probability that the New York Yankees will win next year’s World Series? What does that have to do with power?
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