Answer
Event (A or B) consists of all sample points in Event A and Event B, hence
(A or B) = {0, 2, 4, 5, 6, 7, 8, 9}
P(A or B) = 8/10 = 0.8
Work Step by Step
As given above
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 - Apply Your Knowledge - Page 288: 12.13c
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