Exam 15: Integer Optimization

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Formulate and solve optimization models with binary variables and logical constraints. LO2: Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for a plant location model: A B C D E F 1 Plant Location Model 2 3 Data 4 Distribution Center 5 Plant Houston San Jose Jacksonville Memphis Capacity 6 Dallas \ 11.80 \ 16.48 \ 12.35 \ 18.56 1,300 7 Atlanta \ 8.54 \ 14.65 \ 9.58 \ 18.25 750 8 Detroit \ 12.89 \ 10.78 \ 7.85 \ 10.28 1,400 9 Baltimore \ 14.36 \ 18.95 \ 14.61 \ 6.64 1,300 10 Demand 350 450 800 1,700 11 12 Model 13 14 Amount Shipped Distribution Center 15 Plant Houston San Jose Jack sonville Memphis Total Shipped 16 Dallas 17 Atlanta 18 Detroit 19 Baltimore 20 Supply 21 22 Total Cost 23 \ 0.00 -Which of the following constraints is used in Solver?

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D

Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for Memphis Designs fixed cost model: 1 Memphis Design Fixed Cost Model 2 3 Data 4 5 Cost Quarter 1 Quarter 2 Quarter 3 6 Production \ 10.00 \ 15.00 \ 13.50 7 Inventory \ 1.70 \ 1.70 \ 1.70 8 Demand 200 450 75 9 Fixed Cost \ 75.00 \ 75.00 \ 75.00 10 11 Model 12 13 Quarter 1 Quarter 2 Quarter 3 14 Production 15 Inventory 16 Binary 17 18 Binary constraints 19 Net Production 20 21 Cost 22 Total -What is the net production at the end of the second quarter?

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C

Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. A company makes standard 130-inch-wide rolls of thin sheet metal and slits them into smaller rolls to meet customer orders for widths of 10, 14, and 25 inches. Suppose that the company has proposed the following cutting patterns: A B C D E 1 Cutting-Stock Problem 2 3 Data 4 Pattern 10-in rolls 14 in. rolls 25-in. rolls Scrap 5 1 0 8 0 10 6 2 0 2 3 10 7 3 3 0 3 4 8 4 10 0 0 10 9 5 3 2 2 4 10 6 8 2 0 4 Demands for the coming week are 950 10-inch rolls, 725 14-inch roles, and 640 25-inch rolls. Develop a model using the Analytic Solver Platform that will determine how many 130-inch rolls to cut into each of the six patterns in order to meet demand and minimize scrap. -What is the total scrap produced?

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B

Decision variables that are forced to be integers are called general integer variables.

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Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. A company makes standard 130-inch-wide rolls of thin sheet metal and slits them into smaller rolls to meet customer orders for widths of 10, 14, and 25 inches. Suppose that the company has proposed the following cutting patterns: A B C D E 1 Cutting-Stock Problem 2 3 Data 4 Pattern 10-in rolls 14 in. rolls 25-in. rolls Scrap 5 1 0 8 0 10 6 2 0 2 3 10 7 3 3 0 3 4 8 4 10 0 0 10 9 5 3 2 2 4 10 6 8 2 0 4 Demands for the coming week are 950 10-inch rolls, 725 14-inch roles, and 640 25-inch rolls. Develop a model using the Analytic Solver Platform that will determine how many 130-inch rolls to cut into each of the six patterns in order to meet demand and minimize scrap. -What is the total number of 14-inch rolls produced?

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Formulate and solve optimization models with binary variables and logical constraints. LO2: Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for a plant location model: A B C D E F 1 Plant Location Model 2 3 Data 4 Distribution Center 5 Plant Houston San Jose Jacksonville Memphis Capacity 6 Dallas \ 11.80 \ 16.48 \ 12.35 \ 18.56 1,300 7 Atlanta \ 8.54 \ 14.65 \ 9.58 \ 18.25 750 8 Detroit \ 12.89 \ 10.78 \ 7.85 \ 10.28 1,400 9 Baltimore \ 14.36 \ 18.95 \ 14.61 \ 6.64 1,300 10 Demand 350 450 800 1,700 11 12 Model 13 14 Amount Shipped Distribution Center 15 Plant Houston San Jose Jack sonville Memphis Total Shipped 16 Dallas 17 Atlanta 18 Detroit 19 Baltimore 20 Supply 21 22 Total Cost 23 \ 0.00 -What is the total amount shipped by the Detroit plant to the distribution centers?

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Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Coppell Services contracts with outsourcing partners to handle various customer service functions. Based on a study of call volumes provided by one of the firm's partners, the minimum number of staff needed for each hour of the day is as follows: Hour Minimum Staff Required 8-9 6 9-10 10 10-11 12 11 -noon 10 noon-1 8 1-2 16 2-3 15 3-4 20 4-5 15 Mr. Coppell hires 6 permanent employees and wants to staff the remaining requirements using part-time employees who work 4-hour shifts (four consecutive hours starting as early as 8 A.M. or as late as 1 P.M.). -Which of the following best defines a binary variable?

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What should be the value of Integer Tolerance in order to find the guaranteed optimal integer solution?

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Formulate and solve optimization models with binary variables and logical constraints. LO2: Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for a plant location model: A B C D E F 1 Plant Location Model 2 3 Data 4 Distribution Center 5 Plant Houston San Jose Jacksonville Memphis Capacity 6 Dallas \ 11.80 \ 16.48 \ 12.35 \ 18.56 1,300 7 Atlanta \ 8.54 \ 14.65 \ 9.58 \ 18.25 750 8 Detroit \ 12.89 \ 10.78 \ 7.85 \ 10.28 1,400 9 Baltimore \ 14.36 \ 18.95 \ 14.61 \ 6.64 1,300 10 Demand 350 450 800 1,700 11 12 Model 13 14 Amount Shipped Distribution Center 15 Plant Houston San Jose Jack sonville Memphis Total Shipped 16 Dallas 17 Atlanta 18 Detroit 19 Baltimore 20 Supply 21 22 Total Cost 23 \ 0.00 -What is the total cost incurred?

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Formulate and solve optimization models with binary variables and logical constraints. Use the table below to answer the following question(s) by invoking the binary constraints on the variables using the standard Solver. Below is the spreadsheet for a project selection model: A B C D E F G Project Selection 1 Model 2 3 Data 4 Available Project 1 Project 2 Project 3 Project 4 Project 5 Resources 5 Expected Return () \ 160,000 \ 200,000 \ 125,000 \ 150,000 \ 225,000 6 Cash requirements \ 45,000 \ 70,000 \ 28,000 \ 52,000 \ 65,000 \1 75,000 7 Personnel requirements 7 4 2 6 4 10 8 9 Model 10 11 Project selection decisions 12 Cash Used 13 Personnel Used 14 Return -What is the total amount of cash used for all five projects?

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Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Coppell Services contracts with outsourcing partners to handle various customer service functions. Based on a study of call volumes provided by one of the firm's partners, the minimum number of staff needed for each hour of the day is as follows: Hour Minimum Staff Required 8-9 6 9-10 10 10-11 12 11 -noon 10 noon-1 8 1-2 16 2-3 15 3-4 20 4-5 15 Mr. Coppell hires 6 permanent employees and wants to staff the remaining requirements using part-time employees who work 4-hour shifts (four consecutive hours starting as early as 8 A.M. or as late as 1 P.M.). -What is the minimum number of total part-time employees needed across all the 4-hour shifts to ensure meeting the staffing requirements?

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Formulate and solve optimization models with binary variables and logical constraints. LO2: Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for a plant location model: A B C D E F 1 Plant Location Model 2 3 Data 4 Distribution Center 5 Plant Houston San Jose Jacksonville Memphis Capacity 6 Dallas \ 11.80 \ 16.48 \ 12.35 \ 18.56 1,300 7 Atlanta \ 8.54 \ 14.65 \ 9.58 \ 18.25 750 8 Detroit \ 12.89 \ 10.78 \ 7.85 \ 10.28 1,400 9 Baltimore \ 14.36 \ 18.95 \ 14.61 \ 6.64 1,300 10 Demand 350 450 800 1,700 11 12 Model 13 14 Amount Shipped Distribution Center 15 Plant Houston San Jose Jack sonville Memphis Total Shipped 16 Dallas 17 Atlanta 18 Detroit 19 Baltimore 20 Supply 21 22 Total Cost 23 \ 0.00 -What is the total amount shipped by the Atlanta plant to the distribution centers?

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Solver can generate a Sensitivity report for integer models.

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What is the importance of binary variables in integer optimization models?

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Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for Memphis Designs fixed cost model: 1 Memphis Design Fixed Cost Model 2 3 Data 4 5 Cost Quarter 1 Quarter 2 Quarter 3 6 Production \ 10.00 \ 15.00 \ 13.50 7 Inventory \ 1.70 \ 1.70 \ 1.70 8 Demand 200 450 75 9 Fixed Cost \ 75.00 \ 75.00 \ 75.00 10 11 Model 12 13 Quarter 1 Quarter 2 Quarter 3 14 Production 15 Inventory 16 Binary 17 18 Binary constraints 19 Net Production 20 21 Cost 22 Total -What is the net production at the end of the third quarter?

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Formulate and solve optimization models with binary variables and logical constraints. Use the table below to answer the following question(s) by invoking the binary constraints on the variables using the standard Solver. Below is the spreadsheet for a project selection model: A B C D E F G Project Selection 1 Model 2 3 Data 4 Available Project 1 Project 2 Project 3 Project 4 Project 5 Resources 5 Expected Return () \ 160,000 \ 200,000 \ 125,000 \ 150,000 \ 225,000 6 Cash requirements \ 45,000 \ 70,000 \ 28,000 \ 52,000 \ 65,000 \1 75,000 7 Personnel requirements 7 4 2 6 4 10 8 9 Model 10 11 Project selection decisions 12 Cash Used 13 Personnel Used 14 Return -What is the amount of personnel used for Project 2?

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Explain the implementation of a project-selection model.

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Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. A company makes standard 130-inch-wide rolls of thin sheet metal and slits them into smaller rolls to meet customer orders for widths of 10, 14, and 25 inches. Suppose that the company has proposed the following cutting patterns: A B C D E 1 Cutting-Stock Problem 2 3 Data 4 Pattern 10-in rolls 14 in. rolls 25-in. rolls Scrap 5 1 0 8 0 10 6 2 0 2 3 10 7 3 3 0 3 4 8 4 10 0 0 10 9 5 3 2 2 4 10 6 8 2 0 4 Demands for the coming week are 950 10-inch rolls, 725 14-inch roles, and 640 25-inch rolls. Develop a model using the Analytic Solver Platform that will determine how many 130-inch rolls to cut into each of the six patterns in order to meet demand and minimize scrap. -What is the total number of 10-inch rolls produced?

(Multiple Choice)
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Formulate and solve optimization models with binary variables and logical constraints. LO2: Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for a plant location model: A B C D E F 1 Plant Location Model 2 3 Data 4 Distribution Center 5 Plant Houston San Jose Jacksonville Memphis Capacity 6 Dallas \ 11.80 \ 16.48 \ 12.35 \ 18.56 1,300 7 Atlanta \ 8.54 \ 14.65 \ 9.58 \ 18.25 750 8 Detroit \ 12.89 \ 10.78 \ 7.85 \ 10.28 1,400 9 Baltimore \ 14.36 \ 18.95 \ 14.61 \ 6.64 1,300 10 Demand 350 450 800 1,700 11 12 Model 13 14 Amount Shipped Distribution Center 15 Plant Houston San Jose Jack sonville Memphis Total Shipped 16 Dallas 17 Atlanta 18 Detroit 19 Baltimore 20 Supply 21 22 Total Cost 23 \ 0.00 -In which of the following plants is the total amount shipped to the distribution centers equal to zero?

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Use a modern software tool to perform statistical calculations. Use the table below to answer the following question(s) using the standard Solver. Below is the spreadsheet for Memphis Designs fixed cost model: 1 Memphis Design Fixed Cost Model 2 3 Data 4 5 Cost Quarter 1 Quarter 2 Quarter 3 6 Production \ 10.00 \ 15.00 \ 13.50 7 Inventory \ 1.70 \ 1.70 \ 1.70 8 Demand 200 450 75 9 Fixed Cost \ 75.00 \ 75.00 \ 75.00 10 11 Model 12 13 Quarter 1 Quarter 2 Quarter 3 14 Production 15 Inventory 16 Binary 17 18 Binary constraints 19 Net Production 20 21 Cost 22 Total -What is the inventory at the end of the first quarter?

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