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Inference aplet 9-11
Results The results are:
One–Proportion Z–Test
Menu name Z–Test: 1P
On the basis of statistics from a single sample, this 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.
You select one of the following alternative hypotheses against
which to test the null hypothesis:
Inputs The inputs are:
Result Description
Test Z Z–Test statistic
Prob Probability associated with the
Z–Test statistic.
Critical Z Boundary value of Z associated
with the α level that you
supplied.
H
0
ππ
0
=
H
1
:ππ
0
<
H
1
:ππ
0
>
H
1
:ππ
0
≠
Field name Definition
x Number of successes in the sample.
n Sample size.
π
Population proportion of successes.
α Significance level.