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August 28, 2014

Homework Help: college statistics

Posted by shanice on Thursday, October 10, 2013 at 10:51pm.

7. Mary goes into the supermarket. The probability that she buys (a) regular coffee is .30, (b) decaffeinated coffee is .40, and (c) that she buys both is .30. What is the probability that she buys regular coffee, decaffeinated coffee, or both?

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