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a stadium Uses multiple channel queuing system as fans arrive they wait in a single file line for the next available ticket window. On average it takes 2 minutes to purchase a ticket and fans arrive at the booth at average rate of 6 customers every 5 minutes. find the following:

a. The minimum number of ticket window that must be open to allow for a feasible system

b. When three widows are open what is the probability all windows are empty

c. When four ticket window are utilized what is the average number of fans waiting in line

d. When four ticket windows are utilized what is the average time a fan waits in line.

e. When five ticket windows are utilized what is the average time a customer is in the ticket center

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