SOLUTION: Let P(X) _ .55 and P(Y) _ .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring?

Question 888293: Let P(X) _ .55 and P(Y) _ .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Let P(X) _ .55 and P(Y) _ .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring?
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P(X or Y) = P(X) + P(Y) - P(X and Y)
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P(X or Y) = 0.55 + 0.35 - 0.20 = 0.7
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Cheers,
Stan H.
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