Two-Sample T-Test - HP 39gII User Manual

Two-Sample T-Test

Menu name
Inputs
112
Result
Critical T
Critical
x
T-Test: μ – μ
1 2
The Two-sample T-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, Η : μ = μ
0
1 2
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.
α
Description
Boundary value(s) of T
associated with the α level that
you supplied.
Boundary value(s) of
required 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
x
Inference app