Question: 9. The average employee in the US spends u = 25 minutes commuting to work each day. Assume that the distribution of commute times is

9. The average employee in the US spends u = 25 minutes commuting to work each day. Assume that the distribution of commute times is normal with a standard deviation of o = 8 minutes. (a) What proportion of employees spend less than 15 minutes a day commuting? (b) What proportion of employees spend more than 30 minutes commuting each day

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