Chapter 13: Inferential Statistics and Distributions 333
of 7.1 calculated from the larger random sample. This time, use the Stats (summary
statistics) input option.
7. Press … | 8 to display the inferential stat
editor for TInterval.
Press ~ Í to select Inpt:Stats. The editor
changes so that you can enter summary statistics
as input.
8. Press † 163 Ë 8 Í to store 163.8 to v.
Press 7 Ë 1 Í to store 7.1 to Sx.
Press 90 Í to store 90 to n.
9. Press † to move the cursor onto Calculate, and
then press Í to calculate the new 99 percent
confidence interval. The results are displayed on
the home screen.