Texas Instruments TI-83 PLUS - Manual (Page 388)

TI-83 Plus Inferential Statistics and Distributions 385
8. Press †
163
Л
8
Н to store 163.8 to ü .
Press 7
Л
1
Н 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.