Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 237

Data
Calculated
results:
2-SampZInt
(two-sample
2-SampZInt
difference between two population means (m
and s ) are known. The computed confidence interval depends on the user-specified confidence
2
level.
In the example:
LISTC={154, 109, 137, 115, 140}
LISTD={108, 115, 126, 92, 146}
Data
Input:
Calculated
results:
confidence interval; item
z
Nm
1
Chapter 13: Inferential Statistics and Distributions
Stats
) computes a confidence interval for the
9
) when both population standard deviations (s
2
Stats
1
230