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A recent survey published in Business Week concludes that Gatorade commands an 83% share of the sports drink market versus 11% for Coca-Cola's PowerAde, 3% for Pepsi's All Sport, and 3% other. A market research firm wants to conduct a new taste test for which it needs Gatorade drinkers. Potential participants for the test are selected by random screening (sampling) of sports drink users to find Gatorade drinkers. What is the probability that:

a. The first randomly selected drinker qualifies?
b. Three sports drink users will have to be interviewed to find the first Gatorade drinker?

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Statistics and Probability, Statistics

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