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 112: 50

Answer

Jamie Fox: z ≈ -0.80 Jack Nicholson: z ≈ 1.21 The age of Jamie Fox was about 0.80 standard deviations less the mean age of Best Actor winners, and the age of Morgan Freeman was 1.21 standard deviation above the mean age of Best Supporting Actor winners. Neither actor’s age is unusual.

Work Step by Step

z = (x - μ) / σ z score between -2 ans 2 is usual
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