HP Prime Graphing Wireless Calculator - Manual (Page 87)

Inference app 83
You select one of the following alternative hypotheses
against which to test the null hypothesis:
H
0
: μ
1
< μ
2
H
0
: μ
1
> μ
2
H
0
: μ
1
≠ μ
2
Inputs The inputs are:
Results The results are:
Field
name
Definition
Sample 1 mean
Sample 2 mean
s
1
Sample 1 standard deviation
s
2
Sample 2 standard deviation
n
1
Sample 1 size
n
2
Sample 2 size
α Significance level
Pooled Check this option to pool samples
based on their standard deviations
x
1
x
2
Result Description
Test T T-Test statistic
Test Difference in the means associated
with the test t-value
P Probability associated with the T-Test
statistic
DF Degrees of freedom
Critical T Boundary values of T associated with
the α level that you supplied
Critical Difference in the means associated
with the α level you supplied
Δ x
Δ x