a. Example 1 on page 444 in this section used only five pairs of data from Data Set 14 “Oscar Winner Age” in Appendix B. Repeat the hypothesis test of Example 1 using the data given below. Use a 0.05 significance level as in Example 1.
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)?

Use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal.

Data From Exercise 1:

For the methods of this section, which of the following statements are true?