Texas Instruments TI-84 Plus Guide Book

Chapter 13: Inferential Statistics and Distributions 355
2-SampTInt
2-SampTInt2-SampTInt
2-SampTInt
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:
Calculated
results:
Data Stats

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-