The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 18 - Inference in Practice - Check Your Skills - Page 434: 18.27

Answer

See below.

Work Step by Step

The power is the probability of rejecting the null hypothesis when the alternative hypothesis is true. Thus the power is important, because it describes how well the test is performing in case of the null hypothesis being not true.
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