Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 4 - Section 4.5 - Union of Events and the Addition Rule - Exercises - Page 161: 4.67

Answer

if non-mutually exclusive P(A or B ) = P(A) + P(B) -P(A ∩ B ) if mutually exclusive P(A or B ) = P(A) + P(B) The only difference is that the intersection of A and B needs to be removed when they are non mutually exclusive.

Work Step by Step

see above.
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