Answer
$z=-2.5$
Work Step by Step
$x=\mu-2.5\sigma$
$z=\frac{x-\mu}{\sigma}=\frac{\mu-2.5\sigma-\mu}{\sigma}=\frac{-2.5\sigma}{\sigma}=-2.5$
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
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: 5.27d
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
