HP 40g hp 39g & 40g_user's manual_English_E_pdfbpia5212.pdf - Page 133
Two-Proportion Z-Interval
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Two-Proportion Z-Interval Menu name Inputs Z-INT: P1 - P2 This option uses the Normal Z-distribution to calculate a confidence interval for the difference between the proportions of successes in two populations. The inputs are: Field name Definition x1 Sample 1 success count. x2 Sample 2 success count. n1 Sample 1 size. n2 Sample 2 size. C Confidence level. Results The results are: Result Critical Z ∆ π Min ∆ π Max Description Critical value for Z. Lower bound for the difference between the proportions of successes. Upper bound for the difference between the proportions of successes. Inference aplet 9-19
Inference aplet
9-19
Two–Proportion Z–Interval
Menu name
Z–INT: P1 – P2
This option uses the Normal Z–distribution to calculate a
confidence interval for the difference between the proportions
of successes in two populations.
Inputs
The inputs are:
Results
The results are:
Field name
Definition
Sample 1 success count.
Sample 2 success count.
n1
Sample 1 size.
n2
Sample 2 size.
C
Confidence level.
x
1
x
2
Result
Description
Critical Z
Critical value for Z.
π
Min
Lower bound for the difference between
the proportions of successes.
π
Max
Upper bound for the difference between the
proportions of successes.
∆
∆