Answer
μ = 70, X=64, z = -1.50
X = μ + zσ = μ + zσ =
64 =70 + (-1.50)σ
σ = $-6/(-1.5)$
= 4
Work Step by Step
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Essentials of Statistics for the Behavioral Sciences 8th Edition
by Gravetter, Frederick J.; Wallnau, Larry B.
Published by
Cengage Learning
ISBN 10:
1133956572
ISBN 13:
978-1-13395-657-0
Chapter 5 - z-Scores: Location of Scores and Standardized Distributions - Problems - Page 147: 17
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