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: 7

Answer

a. 0.1842 b. 0.9210

Work Step by Step

a. 7/38= 0.1842 b. 22/38 + 33/38 - 20/38 = 35/38 = 0.9210
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