Two-Sample T-Interval - HP 39g+ User Manual

Results

Two-Sample T-Interval

Menu name
Inputs
Inference aplet
The results are:
Result Description
Critical T Critical value for T.
µ Min Lower bound for µ.
µ Max Upper bound for µ.
T-INT: µ1 – µ2
This option uses the Student's t-distribution to calculate a
confidence interval for the difference between the means
of two populations, µ1 – µ2, when the population
standard deviations, s1and s2, are unknown.
The inputs are:
Field Definition
name
Sample 1 mean.
x1
Sample 2 mean.
x2
Sample 1 standard deviation.
s1
Sample 2 standard deviation.
s2
Sample 1 size.
n1
Sample 2 size.
n2
Confidence level.
C
Whether or not to pool the samples
_Pooled
based on their standard deviations.
9-19