Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 7 - Estimates and Sample Sizes - 7-2 Estimating a Population Proportion: 23

Answer

a)236 b)0.402 < p < 0.516 c)0.431 < p < 0.487 d)99% confidence interval.

Work Step by Step

a) $x=514\cdot 0.459=235.926\approx236.$ b)0.402 < p < 0.516 c)0.431 < p < 0.487 d) The 99% confidence interval is wider because it has a bigger confidence interval and hence is less precise.
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