Applied Statistics and Probability for Engineers, 6th Edition

Published by Wiley
ISBN 10: 1118539710
ISBN 13: 978-1-11853-971-2

Chapter 2 - Section 2-2 - Interpretations of Probability - Exercises - Page 33: 2-60

Answer

a) $0.7$ b) $0.8$

Work Step by Step

a) Note that P(at least one) = P(one) + P(more than one) Therefore, $P$(at least one)$ = 0.5 + 0.2 = 0.7$ b) Let A be the event that an order requests more than one feature. $P(A) = 0.2$ In the problem, we are looking for P(A'). $P(A') = 1 - P(A) = 1 - 0.2 = 0.8$
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