Answer
The test score 8 is an unusual value.
Work Step by Step
8 is considered an unusual value because it is more than 2 standard deviations below the mean.
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 5 - Normal Probability Distributions - Review Exercises - Page 286: 20
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