Question: In Exercise 13 1 we had paired data because we had
In 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 what extent they endorsed the statement “Sex is fun for me and my partner” on a four-point scale ranging from “never or occasionally” to “almost always.” We then sorted the data on the basis of the gender of the respondent. We could conceivably get the data we had in Exercise 13.1, though without the pairing. Analyze the data in Exercise 13.1 as if they had been collected from independent groups. What would you conclude?
Answer to relevant QuestionsIn Exercise 14.8 a significant difference might lead someone to suggest that poor parent– child relationships are the cause of schizophrenia. Why might this be a troublesome conclusion? Using the data in Appendix D, compare grade point averages for those having ADDSC scores of 65 or less with those having ADDSC scores of 66 or more. Use MYSTAT or other software to repeat the results for Exercise 14.8. Exercise 14.8. The data follow: As it turns out, a research assistant has just finished running the experiment described in Exercise 15.10 without having carried out any power calculations. He tried to run 20 subjects in each group, but he accidentally ...If σ = 15, n = 25, and we are testing H0: µ = 100 versus H1: µ > 100, what value of the mean under H1 would result in power being equal to the probability of a Type II error? This is most easily solved by sketching the ...
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