Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321755936
ISBN 13: 978-0-32175-593-3

Chapter 5 - Continuous Random Variables - Exercises 5.20 - 5.52 - Learning the Mechanics - Page 241: 5.27b

Answer

$z=-1$

Work Step by Step

$x=\mu-\sigma$ $z=\frac{x-\mu}{\sigma}=\frac{\mu-\sigma-\mu}{\sigma}=\frac{-\sigma}{\sigma}=-1$
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