Inference app
107
Two-Sample Z-Test
Menu name
Z-Test:
μ
1
–
μ
2
On the basis of two samples, each from a separate
population, this test measures the strength of the evidence
for a selected hypothesis against the null hypothesis. The
null hypothesis is that the mean of the two populations are
equal,
Η
0
:
μ
1
=
μ
2
.
You select one of the following alternative hypotheses to
test against the null hypothesis:
Inputs
The inputs are:
Results
The results are:
Critical
Boundary value(s) of
required by the
α
value that you
supplied.
Result
Description
x
x
H
1
:
μ
1
μ
2
<
H
1
:
μ
1
μ
2
>
H
1
:
μ
1
μ
2
≠
Field name
Definition
Sample 1 mean.
Sample 2 mean.
n
1
Sample 1 size.
n
2
Sample 2 size.
σ
1
Population 1 standard
deviation.
σ
2
Population 2 standard
deviation.
α
Significance level.
x
1
x
2
Result
Description
Test Z
Z-Test statistic.
Summary of Contents for 39gII
Page 1: ...HP 39gII graphing calculator user s guide Edition1 Part Number NW249 90001 ...
Page 2: ...Printing History Edition 1 November 201 1 ...
Page 32: ...22 Getting started ...
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Page 318: ...308 Programming ...
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