TI-83 Plus Inferential Statistics and Distributions 385
8. Press † 163 Ë 8 Í to store 163.8 to ü.
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.
If the height distribution among a population of women is normally
distributed with a mean m of 165.1 centimeters and a standard deviation
σ of 6.35 centimeters, what height is exceeded by only 5 percent of the
women (the 95th percentile)?
10.Press ‘ to clear the home screen.
Press y = to display the DISTR
(distributions) menu.