Answer
.818
Work Step by Step
Convert P(8.9 <= P <= 9.1) to z-scores and lookup the probability in the table:
.908-.091 = .818
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 12 - Introducing Probability - Chapter 12 Exercises - Page 301: 12.54
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