HP 39g Graphing Calculator Guida Utente Pagina 132

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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.
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