Inputs
Results
Two-Proportion Z-Test
Menu name
Inference aplet
The inputs are:
Field name
x
n
0
The results are:
Result
Test P
Test Z
Prob
Critical Z
Z-Test: 1 – 2
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:
=
.
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.
H
:
1
1
2
H
:
1
1
2
H
:
1
1
2
9-11