Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Section 10.7 - Probability - Exercise Set - Page 1120: 66

Answer

does not make sense

Work Step by Step

This statement does not make sense because the two probabilities are complementary and should add up to $1$ (not $0.7+0.4=1.1$).
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