Problem
You are registering your child for kindergarten. You must do this in person on a specific date and you are required to bring specific documentation (birth certificate, immunization records, etc). You arrive at the school ready to fill out your paper work. On average there are 6 people arriving per hour. The standard deviation of interarrival time is 5 minutes. There are 3 people working to register the students. The time needed to fill out the paper work and make copies of the documentation is 25 minutes with a standard deviation of 25 minutes.
i. What is the interarrival time?
ii. What is the utilization of the workers registering the students?