Two different part types arrive at a facility for processing. Parts of type 1 arrive with interarrival times following a lognormal distribution with a log mean of 11.5 hours and log standard deviation of 2.0 hours (note that these values are the mean and the standard deviation of this lognormal variable itself); the first arrival is at time zero. These arriving parts wait in the queue designated for the only part types 1’s until a (human) operator is available to process them (there is only one such human operator in the facility) and the processing times follow a triangular distribution with parameters 5, 6, and 8 hours.
Parts of type 2 arrive with inter arrival times following an exponential distribution with the mean of 15 hours; the first arrival is at time 0. These parts wait in a second queue (designated for part 2’s only) until the human operator is available to process them (there is only one such human operator in the facility); processing time follow a triangular distribution with parameters 3, 7 and 8 hours.
After being processed by human operator, all parts are sent for processing of an automatic machine not requiring a human operator, which has processing times distributed as triangular with parameters 4, 6 and 8 hours for part 1 and exponential with mean 5 hours for part 2. All parts shares the same first come, first-served queue for this automatic machine. Complete parts exit the system.
a) Simulate the system by using ARENA Simulation Software for 5000 hours. (Take the screenshots of general model and each module you used. For example if you used the create module open it and take the screenshot in order to show how you entered the information to that module.)