Texas Instruments TI-82 STATS User Manual

13–18 Inferential Statistics and Distributions
8250FC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:39 PM Printed: 10/27/05 2:57
PM Page 18 of 36
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:
,,
Calculated results:
STAT TESTS Menu (continued)
2.SampZInt

Texas Instruments TI-82 STATS Specifications

General

Type	Graphing Calculator
Display	LCD
Resolution	96 x 64 pixels
Characters	16 x 8
Processor	Zilog Z80
Programming	TI-BASIC
Memory	28 KB RAM
Power	4 AAA batteries
Connectivity	Link port