At a local fast food joint,cars arrive randomly at a rate of 12 every 30 minutes.Service times are random (exponential)and average 2 minutes per arrival.The average time in the queue for each arrival is
A)2 minutes.
B)4 minutes.
C)6 minutes.
D)8 minutes.
E)10 minutes.

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The Answer of At a local fast food joint,cars arrive randomly at a rate of 12 every 30 minutes.Service times are random (exponential)and average 2 minutes per arrival.The average time in the queue for each arrival is
A)2 minutes.
B)4 minutes.
C)6 minutes.
D)8 minutes.
E)10 minutes.

At a Local Fast Food Joint,cars Arrive Randomly at a Rate