For the IQ data on females in Appendix D (data set Add.dat on the website), test the null hypothesis that µ female = 100.
Answer to relevant QuestionsIn Exercise 12.14 you probably solved for t instead of z. Why was that necessary? In Exercise 12.14 For the IQ data on females in Appendix D (data set Add.dat on the website), test the null hypothesis that µ female = 100. I drew 50 samples of 5 scores each from the same population that the data in Exercise 12.1 came from, and calculated the mean of each sample. The means are shown below. Plot the distribution of these means. Why do the data in Exercise 12.6 not really speak to the issue of whether education in North Dakota is generally in good shape? Modify the data in Exercise 13.6 by shifting the entries in the “12 hour” column so as to increase the relationship between the two variables. Run a t test on the modified data and notice the effect on t. (You could ...Hoaglin, Mosteller, and Tukey (1983) present data on blood levels of beta-endorphin as a function of stress. They took beta-endorphin levels for 19 patients 12 hours before surgery and again 10 minutes before surgery. The ...
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