Texas Instruments TI-84 PLUS - Graphing Calculator User Manual

Chapter 13: Inferential Statistics and Distributions 229
ZInterval
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:
L1={299.4, 297.7, 301, 298.9, 300.2, 297}
TInterval
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:
L6={1.6, 1.7, 1.8, 1.9}
Data Stats
Input:
Calculated
results:
Data Stats
Input:

Texas Instruments TI-84 PLUS - Graphing Calculator Specifications

General

Type	Graphing Calculator
Display Type	LCD
Screen Resolution	96 x 64 pixels
Processor	Zilog Z80
Memory	24 KB RAM, 480 KB Flash ROM
Power Source	4 AAA batteries (with backup lithium battery)
Connectivity	I/O port
Weight	7.4 oz (210 g)
Software	TI-OS (Texas Instruments Operating System)