Answer
13.14%
Work Step by Step
$(28-22.2)/5.2 = z$
$5.8/5.2 = z$
$1.115 = z$ (rounded to 1.12)
.8686 is the value when z = 1.12
$1-.8686 = .1314$
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 3 - The Normal Distributions - Chapter 3 Exercises - Page 96: 3.35
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