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

Results
Two–Sample Z–Test
Menu name
Inputs
9-10
The results are:
Result Description
Test Z Z–test statistic.
Prob Probability associated with the
Z–Test statistic.
Critical Z Boundary values of Z associated
with the level that you supplied.
Boundary values of
x
Critical
the
Z–Test: 1– 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 (H
You select one of the following alternative hypotheses against
which to test the null hypothesis:
H
H
H
The inputs are:
Field name Definition
Sample 1 mean.
x1
Sample 2 mean.
x2
n1 Sample 1 size.
n2 Sample 2 size.
1 Population 1 standard deviation.
2 Population 2 standard deviation.
Significance level.
x required by
value that you supplied.
:
0
1 1 2
1 1 2
1 1 2
Inference aplet
= ).
1 2