Two-Proportion Z-Test - HP 39g+ User Manual

Inputs
Results

Two-Proportion Z-Test

Menu name
Inference aplet
The inputs are:
Field name
x
n
π
0
α
The results are:
Result
Test P
Test Z
Prob
Critical Z
Z-Test: π1 – π2
On the basis of statistics from two samples, each from a
different population, the Two-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
H0: π = π
.
1 2
You select one of the following alternative hypotheses
against which to test the null hypothesis:
Definition
Number of successes in the sample.
Sample size.
Population proportion of successes.
Significance level.
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
H
:π
1 1 2
> π
H
:π
1 1 2
≠ π
H
:π
1 1 2
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