HP 39G User Manual page 129

Inputs
Results
Inference aplet
The inputs are:
Field name Definition
Sample 1 mean.
x1
Sample 2 mean.
x2
S1 Sample 1 standard deviation.
S2 Sample 2 standard deviation.
n1 Sample 1 size.
n2 Sample 2 size.
Significance level.
_Pooled? Check this option to pool samples based on
their standard deviations.
The results are:
Result Description
Test T T–Test statistic.
Prob Probability associated with the T–Test
statistic.
Critical T Boundary values of T associated with
the level that you supplied.
9-15