Please I need the answer under 15 minutes. Make the answer clear and precise and show all workings with graph thank you. Studying for finals class starts in 20 minutes!!!.

X - 2

M-2 Automobiles arrive at the drive-through window at a post office at the rate of X every 10 minutes. The average service time is X minutes. The Poisson distribution is appropriate for the arrival rate and service times are exponentially distributed. (Note: the given equations are NOT necessarily in the correct order.) a. What is the average time a car is in the system? b. What is the average number of cars in the system? c What is the average time cars spend waiting to receive service? d. What is the average number of cars in line behind the customer receiving service? e. What is the probability that there are no cars at the window? f. What percentage of the time is the postal clerk busy? 8. What is the probability that there are exactly two cars in the system? (-) 2 W. (-) W= 2 2 Pa Po= 11