Zinterval – Texas Instruments TI-83 PLUS User Manual

Page 408

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TI-83 Plus

Inferential Statistics and Distributions

405

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:

L

1

={299.4 297.7 301 298.9 300.2 297}

Data

Stats

Input:

,

,

Calculated results:

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