The average employee in the U.S.A. spends µ = 23 minutes commuting to work each day. Assume that the distribution of commute times is normal with a standard deviation of s = 8 minutes.
a. What is the probability of randomly selecting an employee who spends more than 35 minutes commuting each day?
b. What is the probability of randomly selecting an employee who spends less than 19 minutes commuting each day?