Essentials of Statistics for Business and Economics (with XLSTAT Printed Access Card)
Essentials of Statistics for Business and Economics (with XLSTAT Printed Access Card)
8th Edition
ISBN: 9781337114172
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Chapter 11, Problem 26SE

a.

To determine

Check whether the sample indicates that the maximum acceptable variance is being exceed.

b.

To determine

Compute the 90% confidence interval estimate of the population variance of the ball bearings in the population.

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