Two-Sample Z-Test - HP 39gs User Manual

Results

Two-Sample Z-Test

Menu name
Inputs
Inference aplet
The results are:
Result
Test Z
Prob
Critical Z
Critical x
Z-Test: μ1–μ2
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
: μ1= μ2).
equal (H
0
You select one of the following alternative hypotheses
against which to test the null hypothesis:
The inputs are:
Field name
x1
x2
n1
n2
σ1
Description
Z-test statistic.
Probability associated with the
Z-Test statistic.
Boundary values of Z
associated with the α level that
you supplied.
Boundary values of
by the α value that you
supplied.
< μ
H
:μ
1 1 2
> μ
H
:μ
1 1 2
≠ μ
H
:μ
1 1 2
Definition
Sample 1 mean.
Sample 2 mean.
Sample 1 size.
Sample 2 size.
Population 1 standard
deviation.
x
required
11-9