Suppose A and B are mutually exclusive events, and that P (A) = 0.13 and P (B) = 0.85. Find P (A OR B).

Question

Azaria Salas

Mathematics

23 September, 15:07

Suppose A and B are mutually exclusive events, and that P (A) = 0.13 and P (B) = 0.85. Find P (A OR B).

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Answers (1)

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Austin Alexander · Answer 1

Answer: 0.98

Work Shown:

P (A or B) = P (A) + P (B) - P (A and B)

P (A or B) = 0.13 + 0.85 - 0

P (A or B) = 0.98

Note that P (A and B) is 0. This is because we are told A and B are mutually exclusive events. This means both events cannot happen simultaneously. An example would be flipping a coin to have it land on heads and tails at the same time.