HW2

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Washington State University *

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MISC

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Industrial Engineering

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Feb 20, 2024

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docx

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Uploaded by DeaconCloverSheep15

HW 2 Chapter 3 Modeling Distance and Examining Inputs/Outputs Instructions: Follow the steps in the workbook and complete the questions below. Save your document as lastname_HW2.XXXX. Part 3.1 Building the model. Complete Steps: 1-6. Question 1: What does the passenger look like as they “move”? Question 2: What color is the check-in when it is idle and when it is busy? Question 3: What is the state name and state number when the server is busy? Part 3.2: Using the 3D Warehouse Complete steps 1-4. Part 3.3 Examining Model Input Parameters Complete Steps 1-3. Question 4: Using the Simio “help”, what is the mean of a Triangular distribution whose minimum is 1, whose mode is 3 and whose maximum is 8? Complete Steps 4-7 Question 5: Do you notice any change in behavior of the simulation? Complete steps 8-9. Part 3.4: Examining Output Complete step 1. Question 6: What is the average number of people waiting at check in?

Question 7: What is the average time in minutes they were waiting? Question 8: Do you think these are “good” results? Why or why not? Complete steps 2-4. Question 9: What did you get for the average, minimum, maximum, and half-width for the number of passengers in the system? Question 10: What is the average, minimum, maximum, and half-width for time in system (FlowTime) in minutes? Complete steps 5-6. Question 11: Suppose you want the average number in the system for Passengers to be within +-5% of its mean? How many replications would be needed given the previous half width calculation? Question 12: Suppose you want the maximum number in the system for Passengers to be within +-2 passengers? How many replications would be needed? Complete step 7. Question 13: What did you get for the “Standard Deviation” for the number of passengers in the system? Question 14: What part of the confidence interval formulation has the standard error- it’s what SIMIO calls the standard deviation here? Complete Step 8. Part 3.5 Using Experiments. Complete Steps: 1-5. Question 15: What is the minimum average time in the system for “ScenarioCap4”? Complete steps 6. Question 16: What are the average and half-width for average time in system for each scenario? Complete Steps 7-11.

Question 17: What is the mean average time in the system for “ScenarioCap3”? Question 18: What is the 95% confidence interval for the mean average time in system for “ScenarioCap3”? Part 3.6: Input Sensitivity Complete step 1-4. Question 19: Passing your cursor over the bars, what are the sensitivity coefficients for the interarrival time and the processing tie for ScenarioCap3? Question 20: When you examine the Bar Chart and Pie Chart for the time in system response, what is the percentage contribution of each input for ScenarioCap3? Complete step 5. STOP AND SUBMIT VIA CANVAS.

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Part 2 – Input Analysis The Excel file HW2_Dataset.xls contains 47 observations on call durations (in minutes) at the call center. Use Stat::Fit (or other software) to fit one or more probability distributions to these data, including goodness-of-fit testing and probability plots. What’s your recommendation for a distribution to be used in the simulation model from which to generate these call-duration times? Provide the correct Simio expression. Pay attention to any parameterization-difference issues.

HW2

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