94 % (743 Review)

Problem 1: Modify Model 3-1 with all of the following changes: â€¢ Add a second machine to which all parts go immediately after exiting the first machine for a separate kind of processing (for example, the first machine is drilling and the second machine is washing). Processing times at the second machine are the same as for the first machine. â€¢ Immediately after the second machine there is pass/fail inspection that takes a constant 5 minutes to carry out and has an 80% chance of passing result. All the parts exit the system regardless of whether they pass or fail the test. â€¢ Include plots to track the queue length and number busy at all the stations. â€¢ Run the simulation for 480 minutes. Gather the following statistics: o Time in queue at all three stations o Queue length at all three stations o Utilization for at all three stations o Number of parts that pass o Number of parts that fail ------------------------------------- Problem 2: In problem 1, suppose that the parts that fail inspection after being washed are sent back and re-washed, instead of leaving; such re-washed parts must then undergo the same inspection, and have the same probability of failing. Run the model under the same condition and compare the results for the following â€¢ Time in queue at the inspection center â€¢ Queue length at the inspection center â€¢ Utilization at the inspection center ---------------------------------- Problem 3: In problem 2, suppose that the inspection can result in one of the three outcomes: pass (probability 0.8), fail (probability 0.09) and re-wash (probability 0.11). Failures leave immediately and re-washes loop back to the washer. Gather the following statistics: o Time in queue at the inspection center o Queue length at the inspection center o Utilization for at the inspection center o Number of parts that pass o Number of parts that fail ---------------------------------- Problem 4: Passengers arrive at the main entrance door of an airline terminal according to an exponential interarrival time distribution with mean 1.6 minutes, with the first arrival at time 0. The travel time from the entrance to the check-ins is distributed uniformly between 2 and 3 minutes. At the check-in counter passengers wait in a single line until one of the four agents is available to serve them. The check-in time follows a Weibull distribution with parameters beta = 7.76 and alpha = 3.91. Upon completion they are free to travel to their gates. Create a simulation model of this system. Run the simulation for 8 hours to determine the average time in system, the number of passengers completing check-in and the average length of the check-in queue. --------------------------------------------- Problem 5: Modify the simulation in problem 4 by adding agent breaks. The break starts four hours into the shift and each agent takes a 15 minutes break. The agents take turns for the breaks and only one agent is on break at any time. Compare the results of this model with the one without breaks.

Your answer will be ready within 2-4 hrs. Meanwhile, check out other millions of Q&As and Solutions Manual we have in our catalog.