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Two-Sample T-Test
Menu name
Inputs
228
Result
Critical T
Critical
x
T-Test:
–
1
2
This test is used when the population standard deviation is
not known. On the basis of statistics from two samples,
each sample from a different population, this test
measures the strength of the evidence for a selected
hypothesis against the null hypothesis. The null hypothesis
is that the two populations means are equal,
You select one of the following alternative hypotheses
against which to test the null hypothesis:
The inputs are:
Field
Definition
name
Sample 1 mean
x
1
Sample 2 mean
x
2
Sample 1 standard deviation
s
1
Sample 2 standard deviation
s
2
Sample 1 size
n
1
Sample 2 size
n
2
Significance level
Description (Continued)
Boundary value(s) of T
associated with the level that
you supplied
Boundary value(s) of
required by the value that you
supplied
H
:
<
1
1
2
H
:
>
1
1
2
H
:
≠
1
1
2
x
:
=
.
0
Inference app
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