Mathematics, 14.10.2019 08:01 trinityparker

Arecent survey found that 73% of all adults over 50 wear sunglasses for driving. in a random sample of 20 adults over 50, what is the mean and standard deviation of those that wear sunglasses?

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a) mean: 5.4; standard deviation: 1.98544705

b) mean: 14.6; standard deviation: 3.82099463

c) mean: 5.4; standard deviation: 3.82099463

d) mean: 14.6; standard deviation: 1.98544705

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