Question 3 (workbook Q9): Small toys are assembled in four stages (centres 1, 2, and 3 and Inspection) at the Bengal Toy Company. After each assembly step, the appliance is inspected or tested; if a defect is found, it must be corrected and then checked again. The assemblies arrive at a constant rate of one assembly every two minutes. The times to assemble, test and correct defects are normally distributed. The mean and standard deviations of the time to assemble, inspect and correct defects as well as the likelihood of an assembly error, are shown in table L4.9 (See the table below). If an assembly is found defective, the defect is corrected and it is inspected again. After a defect is corrected, the likelihood of another defect being found is the same as during the first inspection. We assume in this model that an assembly defect is eventually corrected and then it is passed on to the next station. Simulate for 2,000 Hours (1 year). a) Determine the number of good appliances shipped in a year. b) What is the utilization of each assembly centre and the inspection station. c) How could you keep track of the number of defects for each centre? d) Provide text file. Assembly Time Inspect Time Correct Time Standard Standard Standard Centre Mean Deviation Mean Deviation P(error) Mean Deviation 0.7 0.2 0.2 0.05 0.1 0.2 0.05 0.75 0.25 0.2 0.05 0.05 0.15 0.04 W N 0.8 0.15 0.03 0.03 0.03 0.1 0.02 Notes: If a defect is found it is returned to the centre it came from. N Use an arrival location. Arrivals leave "first Time" Blank Queue lengths (ft), Centrel_Q -20, Centre2_Q-20, Centre3_Q - 20 and Inspection_Q -30 5. Times are in minutes