The Quick Snap photo machine at the Lemon County bus station takes four snapshots in exactly 75 seconds. Customers arrive at the machine according to a Poisson distribution at the mean rate of 20 per hour. On the basis of this information, determine the following:
a.the average number of customers waiting to use the photo machine
b.the average time a customer spends in the system
c.the probability an arriving customer must wait for service.

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The Answer of The Quick Snap photo machine at the Lemon County bus station takes four snapshots in exactly 75 seconds. Customers arrive at the machine according to a Poisson distribution at the mean rate of 20 per hour. On the basis of this information, determine the following:
a.the average number of customers waiting to use the photo machine
b.the average time a customer spends in the system
c.the probability an arriving customer must wait for service.

The Quick Snap Photo Machine at the Lemon County Bus