Answer
421
Work Step by Step
n = $\frac{z}{m}$ ^ 2 $\times$ p(1 - p)
n = $\frac{1.64}{.04}$ ^ 2 $\times$ .5(1 - .5)
= 421
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 22 - Inference about a Population Proportion - Apply Your Knowledge - Page 525: 22.8b
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