One–Proportion Z–Interval - HP 40G User Manual

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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:
Field name
x
n
C
Results
The results are:
Result
Critical Z
π Min
π Max
9-18
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Definition
Sample success count.
Sample size.
Confidence level.
Description
Critical value for Z.
Lower bound for π.
Upper bound for π.
Inference aplet