Two-Sample T-Interval - HP 39gs 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
s1 Sample 1 standard deviation.
s2 Sample 2 standard deviation.
n1 Sample 1 size.
n2
Sample 2 size.
C Confidence level.
_Pooled Whether or not to pool the samples
based on their standard deviations.
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