Answer
0.2
Work Step by Step
$x$ is the number chosen.
Since there are 10 numbers and each have an equal probability of being chosen, p = 0.1. Therefore, it follows:
p (X = 8 or X = 9) = 0.1 + 0.1 = 0.2
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 14 - Binomial Distributions - Check Your Skills - Page 340: 14.19
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