Texas Instruments TI-83 Guide Book

13-16 Inferential Statistics and Distributions
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM
Page 16 of 36
ZInterval (one-sample
z
confidence interval; item 7)
computes a confidence interval for an unknown population
mean
m
when the population standard deviation
s
is
known. The computed confidence interval depends on the
user-specified confidence level.
In the example:
L
1
={299.4 297.7 301 298.9 300.2 297}
Data Stats
Input:
,,
Calculated results:
ZInterval

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