Solve the problem. A recent survey found that 74% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is the mean and standard deviation of the number who wear glasses? Round to the nearest hundredth when necessary. mean: 59.2; standard deviation: 3.92 mean: 20.8; standard deviation: 3.92 mean: 20.8; standard deviation: 7.69 mean: 59.2; standard deviation: 7.69
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