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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.