A recent survey found that 61% of all adults over the age of fifty wear glasses for driving. In a random sample of 80 adults over the age of fifty, use the binomial distribution to determine what is the mean and standard deviation of those that wear glasses. Select one: a.mean: 31.2; standard deviation: 4.36 b.mean: 31.2; standard deviation: 6.99 c.mean: 48.8; standard deviation: 4.36 d.mean: 48.8; standard deviation: 6.99

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