A machine shop has a large number of machines that fail regularly. One repairperson is available to fix them. Each machine fails on average every three hours, with time between failures being exponential. Repair time (in minutes) has the distribution:
Time Probability
15 ……………………………..0.1
30 ……………………………..0.2
45 ……………………………..0.3
50 ……………………………..0.4
Develop and run a SimQuick model to determine the average time that machines spend waiting for repair and the average percentage of time the repairperson is busy.