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Chapter 13

Problem 11

In your dresser are five blue shirts, three red shirts, and two black shirts. a) What is the probability of randomly selecting a red shirt? b) What is the probability that a randomly selected shirt is not black?

Problem 17

Suppose that \(46 \%\) of families living in a certain county own a computer and \(18 \%\) own an HDTV. The Addition Rule might suggest, then, that \(64 \%\) of families own either a computer or an HDTV. What's wrong with that reasoning?

Problem 45

You bought a new set of four tires from a manufacturer who just announced a recall because \(2 \%\) of those tires are defective. What is the probability that at least one of yours is defective?

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