The statistics of n=22 and s=14.3 result in this 95% confidence interval estimate of σ: 11.0<σ<20.4. That confidence interval can also be expressed as (11.0, 20.4). Given that 15.7±4.7 results in values of 11.0 and 20.4, can the confidence interval be expressed as 15.7±4.7 as well? Choose the correct answer below. A.No. The format implies that s=15.7, but s is given as 14.3. In general, a confidence interval for σ does not have s at the center. B.Yes. In general, a confidence interval for σhas s at the center. C.Yes. Since the chi-square distribution is symmetric, a confidence interval forσcan be expressed as 15.7±4.7. D.Not enough information

15.7±4.7 This format is valid for the confidence interval for mean , because of symmetry

Answered: The statistics of n=22 and s=14.3…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The statistics of n=22 and s=14.3 result in this 95% confidence interval estimate of σ: 11.0<σ<20.4. That confidence interval can also be expressed as (11.0, 20.4). Given that 15.7±4.7 results in values of 11.0 and 20.4, can the confidence interval be expressed as 15.7±4.7 as well?

Choose the correct answer below.

No. The format implies that s=15.7, but s is given as 14.3. In general, a confidence interval for σ does not have s at the center.

Yes. In general, a confidence interval for σhas s at the center.

Yes. Since the chi-square distribution is symmetric, a confidence interval for

σcan be expressed as 15.7±4.7.

Not enough information

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