Texas Instruments TI-82 STATS - Page 257

Inferential Statistics and Distributions 13–19
8250FC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:39 PM Printed: 10/27/05 2:57
PM Page 19 of 36
2.SampTInt (two-sample t confidence interval; item 0)
computes a confidence interval for the difference between two
population means (m
1
Nm
2
) when both population standard
deviations (
s
1
and s
2
) are unknown. The computed confidence
interval depends on the user-specified confidence level.
In the example:
SAMP1={12.207 16.869 25.05 22.429 8.456 10.589}
SAMP2={11.074 9.686 12.064 9.351 8.182 6.642}
Data Stats
Input:
,,
Calculated results:
2.SampTInt