A banker commutes daily from his apartment to his midtown office. The average time for a one-way trip is 20 minutes, wit
Posted: Sun Jul 10, 2022 10:43 am
A banker commutes daily from his apartment to his midtown office. The average time for a one-way trip is 20 minutes, with a standard deviation of 4.8 minutes. Assume the trip times to be normally distributed. (a) If the office opens at 9:00 A.M. and the banker leaves his apartment at 8:45 A.M. daily, what percentage of the time is he late for work? (b) Find the probability that 2 of the next 4 trips will take at least 1/2 hour.