POTUS Confidence Interval Example in this section used

QUESTION:

POTUS Confidence Interval Example 2 in this section used only five pairs of data from Data Set 12 in Appendix B. Repeat Example 2 using all of the cases with heights for both the president and the main opponent. The accompanying TI­83/84 Plus calculator display shows results for a 90% confidence interval constructed from the list of differences in height. In this display, \(\mathrm {x\ ^-}\) is used instead of \(\mathrm {d\ ^-}\), and Sx is used instead of s d . What feature of the confidence interval causes us to reach the same conclusion as in Exercise 4?

TI­83/84 PLUS

Equation Transcription:

Text Transcription:

x ^-

d ^-

overline{x}=.0588235

Sx=9.604106

n=34