What is average time cars spend waiting to receive service

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Reference no: EM13964038

Automobiles arrive at the drive though window at a post office at the rate of 4 every 10 minutes. The average service time is 2 minutes. A second drive though window is being considered. a single line would be formed and as a car reached the front of the line it would go to the next available clerk. The clerk at the new window works at the same rate as the current one.

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 customers receiving service?

e. what is the probability that there are no cars in the system?

f. what percentage of the time are the clecks busy?

g. what is the probability that there are exactly two cars in the system?

Reference no: EM13964038

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