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13th Edition

Anderson

Publisher: CENGAGE L

ISBN: 9781305881884

Chapter 8, Problem 56SE

**a.**

To determine

Find the point estimate of the proportion of the population of voters rated as economy is good and excellent.

**b.**

To determine

Find the 95% confidence interval for the proportion of voters rated as economy as good and excellent.

**c.**

To determine

Find the 95% confidence interval for the proportion of voters rated as economy as poor.

**d.**

To determine

Find the wider confidence interval from part (b) and (c).