Automobiles arrive at the drive-through window at the downtown baton rouge, louisiana, post office at the rate of 2 every 10 minutes. the average service time is 1.0 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 = minutes(round your response to two decimal places).

b) the average number of cars in the system = cars (round your response to two decimal places).

c) the average number of cars waiting to receive service = cars (round your response to two decimal places).

d) the average time a car is in the queue = minutes(round your response to two decimal places).

e) the probability that there are no cars at the window =   (round your response to two decimal places).

f) the percentage of the time the postal clerk is busy = (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).

h) if a second drive-through window, with its own server, were added, the average time a car is in the system = minutes (round your response to two decimal places).