HP 39g+ - Manual (Page 132)

9-18 Inference aplet
One–Proportion Z–Interval
Menu name Z–INT: 1 P
This option uses the Normal Z–distribution to calculate a
confidence interval for the proportion of successes
in a
population for the case in which a sample of size, n, has a
number of successes, x.
Inputs The inputs are:
Results The results are:
Field name Definition
x Sample success count.
n Sample size.
C Confidence level.
Result Description
Critical Z Critical value for Z.
π
Min Lower bound for
π
.
π
Max Upper bound for
π
.