Elementary Statistics: Picturing the World (6th Edition)

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

Chapters 1 & 2 - Cumulative Review - Page 126: 6

Answer

(a) 95% (b) 38 (c) For \$90,500, z ≈ 4.67 For \$79,750, z = -2.5 For \$82,600, z = -0.6 The salaries of \$90,500 and \$79,750 are unusual.

Work Step by Step

Use empirical rule to estimate percentage z = (x – μ) / σ Values of z score between -2 and 2 are usual
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