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Homework Statement
The probability that Joe owns a microwave oven is 75%; the probability that he owns a CD player is 45%; and the probability that he owns both is 40%. Find the probability that he owns either one but not both.
Homework Equations
(work posted below)
The Attempt at a Solution
P(only microwave)= .75-.4 = .35
P(only CD Player) = .45 - .4 = .05
P(only micr. or CD Pl) = .35 + .05 = .4
Answer = .4