The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 3 - The Normal Distributions - Chapter 3 Exercises - Page 96: 3.38

Answer

17.806, 20.874, 23.526, 26.594

Work Step by Step

Respectively, the normal values for z-values of .2, .4, .6, and .8 are -.845, -.255, .255, and .845. $(x-22.2)/5.2 = -.845$ $(x-22.2) = -4.394$ $ x = 17.806$ $(x-22.2)/5.2 = -.255$ $(x-22.2) = -1.326$ $ x = 20.874$ $(x-22.2)/5.2 = -.255$ $(x-22.2) = 1.326$ $ x = 23.526$ $(x-22.2)/5.2 = .845$ $(x-22.2) = 4.394$ $ x = 26.594$
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