Chapter 9.3, Problem 19BSC

Larger Data Sets. In Exercises 17–24, use the indicated Data Sets in Appendix B. The complete data sets can be found at www.TriolaStats.com. Assume that the paired sample data are simple random samples and the differences have a distribution that is approximately normal.

19. Body Temperatures Repeat Exercise 7 “Body Temperatures” using all of the 8 AM and 12 AM body temperatures on Day 2 as listed in Data Set 3 “Body Temperatures” in Appendix B.

7. Body Temperatures Listed below are body temperatures from seven different subjects measured at two different times in a day (from Data Set 3 “Body Temperatures” in Appendix B).

a. Use a 0.05 significance level to test the claim that there is no difference between body temperatures measured at 8 AM and at 12 AM.

b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in part (a)?