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: 5.28a

Answer

$z_0=-1.75$

Work Step by Step

$p(z\leq z_0)=p(z\geq-z_0)=.5-p(0\lt z\leq-z_0)=.0401$ $p(0\lt z\leq-z_0)=.5-.0401=.4599$ According to Table IV, page 773: $p(0\lt z\leq1.75)=.4599$ Hence: $-z_0=1.75$ $z_0=-1.75$
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