An airport limousine service has one employee work the airport counter. A customer arrives on the average of once every three minutes, and it takes on average two minutes to process the transaction. Use the Single Server Queue Excel template to answer the following questions:

a. What is the probability a customer has to wait for service?

b. What is the average time customers wait in the queue?

c. The target service standard for the limousine service is a probability of customers having to wait less than 10 percent. How many employees should be working to meet this target service level?

d. If 10 more customers per hour would be gained from competing transportation firms by increasing the number of employees to the answer in (c), what is system performance? Is it less than a 10 percent chance target service standard?