The Basic Practice of Statistics
The Basic Practice of Statistics
8th Edition
ISBN: 9781319042578
Author: David S. Moore, William I. Notz, Michael A. Fligner
Publisher: W. H. Freeman
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Chapter 16.4, Problem 9AYK

(a)

To determine

To identify: The margin of error for the 95% confidence interval

(b)

To determine

To identify: The margin of error for the 95% confidence for 400 young women and 1,600 young women.

(c)

To determine

To explain: How the increase in the sample size changes the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

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