h. If a second drive through with its own server, were added the average time a car is in the system = ____ Minutes

Answer question G and H please.

Automobiles arrive at the drive-through window at the downtown Baton Rouge, Louisiana, post office at the rate of 4 every 10 minutes. The average service time is 1.5 minutes. The Poisson distribution is appropriate for the arrival rate and service times are negative exponentially distributed. a) The average time a car is in the system = 3.75 minutes (round your response to two decimal places). b) The average number of cars in the system = 1.5 cars (round your response to two decimal places). c) The average number of cars waiting to receive service = .9 cars (round your response to two decimal places). d) The average time a car is in the queue = 2.25 minutes (round your response to two decimal places). e) The probability that there are no cars at the window = .40 (round your response to two decimal places). f) The percentage of the time the postal clerk is busy = 60 % (round your response to the nearest whole number). g) The probability that there are exactly 2 cars in the system = (round your response to three decimal places)