People arrive at a newspaper stand with an interarrival time that is exponentially distributed with a mean of 0.5 minutes. Fifty-five percent of the people buy just the morning paper while 25% buy the morning paper and a Wall Street Journal. The remainder buy only the Wall Street Journal. One clerk handles the Wall Street Journal sales, and another clerk morning-paper sales. A person buying both goes to the Wall Street Journal clerk. The time it takes to serve any customer is normally distributed with a mean of 40 seconds and a standard deviation of 4 seconds for all transactions.

 

Run a simulation:

1. Estimate the average wait time and average length of each queue

2. Estimate the average system time and average number of people in the system.