SOLUTION: a Bank has 2 tellers. customers arriving at the bank vary between 1 and 6 per minute. Each teller services 1 person per minute. What is the length of the waiting line after 5 minu

Question 99790: a Bank has 2 tellers. customers arriving at the bank vary between 1 and 6 per minute. Each teller services 1 person per minute. What is the length of the waiting line after 5 minutes?
How long will a customer wait if they arrive on the 10th minute
How many times will the waiting time be reduced to zero
What is the average number of people waiting in line over the 20mins
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a Bank has 2 tellers. customers arriving at the bank vary between 1 and 6 per minute. Each teller services 1 person per minute. What is the length of the waiting line after 5 minutes?
How long will a customer wait if they arrive on the 10th minute
How many times will the waiting time be reduced to zero
What is the average number of people waiting in line over the 20mins
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Average arrival time is (1+6)/2 = 3.5 minutes
Average service time is 2*1min = 2 per minute
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Question:
Do you have any formulas relating ave. arrival and ave. service?
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Comment: I could see doing this with a minute by minute chart but
there must be some formulas. Right!?
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Cheers,
Stan H.

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