Statistics for Business & Economics, Revised (MindTap Course List)
Statistics for Business & Economics, Revised (MindTap Course List)
12th Edition
ISBN: 9781285846323
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Chapter 22.6, Problem 16E

a.

To determine

Find the mean age of mechanical engineers engaged in this type of work.

b.

To determine

Find the proportion of mechanical engineers in the utility’s service area who attended the local university.

c.

To determine

Obtain approximate 95% confidence interval for the mean age of mechanical engineers designing HVAC systems for commercial buildings.

d.

To determine

Obtain approximate 95% confidence interval for the population proportion.

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