Question: Customers enter a waiting line on a first-come, first-served basis. The arrival rate follows a Poisson distribution, while service times follow an exponential distribution. If

Customers enter a waiting line on a first-come, first-served basis. The arrival rate follows a Poisson distribution, while service times follow an exponential distribution. If the average number of arrivals is six per minute and the average service rate of a single-server is ten per minute, what is the average number of customers in the queue?

A.

1.25

B.

1.5

C.

0.9

D.

0.6

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