Question: People arrive at a newspaper stand with an interanival time that is exponentially distributed with a mean of 0.5 minute. Fifty-five percent of the people buy just the morning paper, 25% buy the morning paper and a Wall Street Journal. The remainder buy only the Walt Street Journal. One clerk handles the Wall Street Journal sales, another clerk morning-paper sales. A person buying both goes to the Wall Street Journal clerk. The time it takes to serve a customer is normally distributed with a mean of 40 seconds and a standard deviation of 4 seconds for all transactions. Collect statistics on queues for each type of transaction. Suggest ways for making the system more efficient Simulate for 4 hours.