Answer
.333333
Work Step by Step
99.7% of the values are within 3 standard deviations:
o _ x = 1/3 = .3333
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 15 - Sampling Distributions - Chapter 15 Exercises - Page 370: 15.38a
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