HP 39gII User Manual page 128

Inputs
Results
118
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
Confidence level.
C
Whether or not to pool the samples
Pooled
based on their standard deviations.
The results are:
Result Description
Confidence level.
C
Degrees of freedom.
DF
Critical T Critical values for T.
Lower
Lower bound for
Upper
Upper bound for
Δ μ.
Δ μ.
Inference app