Inputs, Results, One-proportion z-interval – HP 39g Graphing Calculator User Manual
Page 134
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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, /?, has a
number of successes, x.
Inputs
The inputs are:
Field name
Definition
X
Sample success count.
n
Sample size.
c
Confidence level.
Results
The results are:
Result
Description
Critical Z
Critical value for Z.
71 Min
Lower bound for 7l.
71 Max
Upper bound for n.
9-18
Inference aplet
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