A vending machine at City Airport dispenses hot coffee, hot chocolate, or hot tea, in a constantservice time of 20 seconds. Customers arrive at the vending machine at a mean rate of 60 perhour (Poisson distributed). Determine the operating characteristics of this system.

What is the value of lambda?

What is average time customers wait in line?

From our analysis we believe customers will complain often about the long wait times.

Use the following information to answer the next few questions. At a local fast-food joint, cars arrive randomly at a rate of 12 every 30 minutes. The fast food joint takes an average of 2 minutes to serve each arrival.

Which type of queuing problem is this?

The average time in the system is

The average number of cars at the restaurant is