The Basic Practice of Statistics 7th Edition

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

Chapter 12 - Introducing Probability - Chapter 12 Exercises - Page 300: 12.43b

Answer

Using addition rule and adding the corresponding probabilities of event A less P(15-19) and P(with others) because they are disjoint events, we have P(A) = 0.001 + 0.001 + 0.168 + 0.139 + 0.149 + 0.092 = 0.55

Work Step by Step

As given above
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