The Basic Practice of Statistics 7th Edition

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

Chapter 17 - Tests of Significance: The Basics - Apply Your Knowledge - Page 405: 17.18d

Answer

z score of 2.20 lies between the z* values of 2.054 and 2.326. From Part (b), we have a P value between 0.02 and 0.04. Hence, there is a good evidence against null hypothesis, and we can reject the null hypothesis because the test is significant at significance level of 5%.

Work Step by Step

As given above
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