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Chapter 8: Q 8.122. (page 343)

For the one-mean t-interval procedure, express the formula for the endpoints of a confidence interval in the form.

Short Answer

Expert verified

Confidence interval=x¯±ta2sn

Step by step solution

01

Concept

Formula used: Margin of errorE=ta2sn

02

Explanation

In the form, provide the formula for a confidence interval's endpoints.

Point estimate:

The population mean (μ)is estimated using the sample mean (x¯)

The error margin is:

A margin of error is half the length of the confidence interval. The following is the margin of error formula:E=ta2sn

03

Explanation

The form of a confidence interval's endpoints is,

Confidence interval =Point estimates ±the margin of error (E)

Confidence interval=x¯±ta2sn

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