Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0321911210
ISBN 13: 978-0-32191-121-6

Chapter 2 - Descriptive Statistics - Section 2.5 Measures of Position - Exercises - Page 111: 40

Answer

A is z = -1.54 B is z = 0.77 C is z = 1.54 No z-score of 2.14 is unusual.

Work Step by Step

If z is negative, the corresponding x-value is less than the mean. If z is positive, the corresponding x-value is greater than the mean. If z=0 the corresponding x-value is equal to the mean.
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