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 - Chapter 18 Exercises - Page 437: 18.44

Answer

See below.

Work Step by Step

Power refers to the probability of rejecting the null hypothesis in case of the alternative hypothesis being true. If a test has a low power, then it very is unlikely to reject the null hypothesis, in case of the alternative hypothesis being true. Thus the tests will often fail to give evidence against the null hypothesis.
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