A production line consists of three serial workstations with high reject rates of 7% after each workstation. Parts rejected after the first workstation are sent to scrap. Parts rejected after the second workstation are returned to the first workstation where they are reworked, which requires a fresh "draw" from the processing-time distribution but increased by 30% from the distribution of the original operation. The 30% penalty only applies to workstation 1 and not to workstation 2 when the part returns to it. Parts rejected at the third workstation are returned to the second workstation where they are reworked, with a 50% penalty there. The 50% penalty only applies to workstation 2 and not to workstation 3 when the part returns to it. The operation times are TRIA (5, 9, 12), TRIA (5, 8.5, 13), and TRIA (6.5, 9, 12.5) for workstations 1, 2, and 3 respectively (all times in minutes). Parts interarrival times to the system are UNIF (6, 14).

Run the model for 20,000 minutes collecting statistics on the number in queue at each workstation, the number of scrapped parts, and workstation utilizations. Additionally, collect statistics on the number of times a part was rejected