Using Arena Software:

Consider a flow shop in which jobs are processed in sequence on Machines A, B, and then C. Jobs are produced at a roughly constant rate of 20 per hour in accordance to the forecast. The data for all the machines is provided below. The production costs account for the machining costs as well as the overheads. 20% of jobs on machine A turn out to be defective and are scrapped, which leads to an additional cost of about 40 cents per job. The remaining 80% go on to Machine B and then to Machine C. Defective rates of Machines B and Care negligible. The inventory holding cost is $1 dollar for a thousand minutes per part. Machine Processing time (minutes) Production cost per piece A EXPO(1.4) $1 B NORM(1,0.1) $3 C UNIF(2,3) $1 . . Compute the average cost per unit time of operating this system. Identify the bottleneck machine. Provide an explanation. Determine the average lead time of the job along with its confidence interval Determine the average WIP in the system