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13th Edition

Anderson

Publisher: CENGAGE L

ISBN: 9781305881884

Chapter 8, Problem 59SE

**a.**

To determine

Find the 95% confidence interval for the proportion of workers in each of these industries who feel their industry is understaffed.

**b.**

To determine

Find the sample that needs to be ensured that the margin of error is 0.05 or less for each of the three confidence intervals.