Texas Instruments TI-83 Guide Book

Inferential Statistics and Distributions 13-17
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM
Page 17 of 36
TInterval (one-sample
t
confidence interval; item 8)
computes a confidence interval for an unknown population
mean
m
when the population standard deviation
s
is
unknown. The computed confidence interval depends on
the user-specified confidence level.
In the example:
L
6
={1.6 1.7 1.8 1.9}
Data Stats
Input:
,,
Calculated results:
TInterval

Texas Instruments TI-83 Specifications

General

Programming	TI-BASIC
Processor	Zilog Z80, 6 MHz
Weight	7.4 oz (210 g)
Display	96x64 pixels, monochrome LCD
Power Source	4 AAA batteries, 1 CR1616 or CR1620 for backup
Memory	32 KB RAM
Connectivity	2.5mm I/O port for linking with other TI calculators