ARENA SIMULATION

Parts arrive at a single machine system according to an exponential inter-arrival distribution with a mean of 20 minutes; the first part arrives at time 0. Upon arrival, the parts are processed at a machine. The processing time distribution is TRIA(11,16,18) minutes. The parts are inspected and about 25% are sent back to the same machine to be reprocessed (same processing time). Run the simulation for 20000 minutes to observe the average and maximum number of times a part is processed, the average number of parts in the machine queue, and the average part cycle time (time from a parts entry to the system to its exit after however many passes through the machine are required).