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Altug's Coffee Shop decides to install an automatic coffee vending machine outside one of its stores to reduce the number of people standing in line

Altug's Coffee Shop decides to install an automatic coffee vending machine outside one of its stores to reduce the number of people standing in line inside. Mehmet Altug charges $3.50 per cup. However, it takes too long for people to make change. The service time is a constant 4minutes, and the arrival rate is 12 per hour(Poisson distributed).
Part 2
a) The average wait time in the line =
enter your response here minutes (round your response to two decimal places).
Part 3
b) The average number of customers waiting in the line =
enter your response here customers (round your response to three decimal places).
Part 4
c) Mehmet raises the price to $5 per cup and takes 60 seconds off the service time. However, because the coffee is now so expensive, the arrival rate drops to per hour.
Part 5
The average wait time in the line =
enter your response here minutes (round your response to two decimal places).
Part 6
The average number of customers waiting in the line =
enter your response here customers (round your response to three decimal places).

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