SOLUTION: Event A and Event B are mutually exclusive. P(A) =.27 and P(B) = .31 . What is P(A or B) ?

Question 723569: Event A and Event B are mutually exclusive. P(A) =.27 and P(B) = .31 . What is P(A or B) ?
Answer by AnlytcPhil(1810) (Show Source): You can put this solution on YOUR website!
Event A and Event B are mutually exclusive. P(A) =.27 and P(B) = .31 . What is P(A or B)

Since they are mutually exclusive, they cannot both happen, so P(A and B) = 0

P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = .27  + .31  -    0
P(A or B) = .58

Edwin

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