Answer
False.
Work Step by Step
The probability of an unusual event is 0.05 or less. But, $\frac{1}{10}=0.10\gt0.05$. So, it does not indicate an unusual event.
Elementary Statistics: Picturing the World (6th Edition)
by Larson, Ron; Farber, Betsy
Published by
Pearson
ISBN 10:
0321911210
ISBN 13:
978-0-32191-121-6
Chapter 3 - Probability - Section 3.1 Basic Concepts of Probability and Counting - Exercises - Page 140: 9
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