Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 8 - Hypothesis Testing - Review - Chapter Quick Quiz: 6

Answer

0.0456

Work Step by Step

$H_{0}:\mu=100$. $H_{a}:\mu\ne100.$ The P is the probability of the z-score being more than 2 or less than -2 is the sum of the probability of the z-score being less than -2 plus 1 minus the probability of the z-score being less than 2, hence:P=0.0228+1-0.9772=0.0456.
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