Two–Proportion Z–Test - HP 40G User Manual

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Results
The results are:
Result
Test P
Test Z
Prob
Critical Z
Two–Proportion Z–Test
Menu name
Z–Test: P1–P2
On the basis of statistics from two samples, each from a
different population, the 2 proportion Z–Test measures the
strength of the evidence for a selected hypothesis against the
null hypothesis. The null hypothesis is that the proportion of
successes in the two populations is equal.
: π
(H
0
You select one of the following alternative hypotheses against
which to test the null hypothesis:
Inputs
The inputs are:
Field name
1
X2
n1
n2
α
9-12
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Description
Proportion of successes in the sample.
Z–Test statistic.
Probability associated with the Z–Test
statistic.
Boundary value of Z associated with the
level you supplied.
= π
).
1 2
π < π
H
1 1 2
π > π
H
1 1 2
π ≠ π
H
1 1 2
Definition
Sample 1 mean.
Sample 2 mean.
Sample 1 size.
Sample 2 size.
Significance level.
Inference aplet