Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 4 - Probability and Counting Rules - 4-2 The Addition Rules for Probability - Exercises 4-2 - Page 207: 8

Answer

a. $0.599$ b. $0.401$ c. $0.869$

Work Step by Step

a. From 20 years to 64 years, $p=0.73-0.131=0.599$ b. Under 20 or 65 and over, $p=0.27+0.131=0.401$ c. Not 65 and over, $p=1-0.131=0.869$
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