Texas Instruments TI-83 PLUS - Manual (Page 410)

TI-83 Plus Inferential Statistics and Distributions 407
2 . SampZInt
2 . SampZInt (two-sample z confidence interval; item 9 ) 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
known. The computed confidence interval depends on the user-specified
confidence level.
In the example:
LISTC={154 109 137 115 140}
LISTD={108 115 126 92 146}
Data Stats
Input:
, ,