Statistics: Informed Decisions Using Data (4th Edition)

by Sullivan III, Michael

Published by Pearson

ISBN 10: 0321757270

ISBN 13: 978-0-32175-727-2

Chapter 10 - Section 10.2 - Assess Your Understanding - Vocabulary and Skill Building - Page 493: 6

Answer

z = ±1.96

Work Step by Step

Here α = 0.05 Since the test is two tailed, we have: $P(Z < z_{α/2}) = 0.025$ Using Table V of the book, we have: z = ±1.96

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