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Computer purchases:Out of768 large purchases made at a computer retailer,325 were personal computers,386 were laptop computers, and57 were printers. As a part of an audit,

Computer purchases:Out of768 large purchases made at a computer retailer,325 were personal computers,386 were laptop computers, and57 were printers. As a part of an audit, one purchase record is sampled at random. Round the answers to four decimal places, as needed. (a) What is the probability that it is a personal computer? (b) What is the probability that it is not a laptop computer

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