Answer
(a) z = 3.0, unusual
(b) z ≈ -6.67, very unusual
(c) z ≈ 1.33, not unusual
(d) z = -2.2, unusual
Work Step by Step
z = (X - μ) / σ
x score between -2 and 2 is usual
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 2 - Descriptive Statistics - Chapter Quiz - Page 120: 6
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