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GSCM 530 DeVry Complete Week Homework Assignment
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GSCM 530 DeVry Week 1 Homework Assignment
Assignment: page 431, Problems 2, 8, and 12
2. Given the series of demand data below
a. Calculate the forec
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a. Calculate the forecasts for periods 7 through 11 using moving average models with n = 2, n = 4, and n = 6.
b. Calculate the bias and MAD for each set of forecasts. Which moving average model is the best?
8. The owner of an online video rental service has recorded the following rentals each week:
a. Use a three-week moving average to forecast sales for each of the weeks 4 through 9.
b. Use a four-week moving average to forecast sales for each of the weeks 5 through 9.
c. Compare the forecasts created by these two methods using mean absolute deviation. Which forecasting method would you recommend?
12. Monthly usage data for pallets used in a distribution center are as follows:
a. Calculate the monthly usage index for each month.
b. Use simple linear regression to forecast total usage of pallets for year 5.
c. Forecast the seasonally adjusted usage for pallets for each month in year 5.
Links to sample guide for homework assignment below:
GSCM 530 DeVry Week 2 Homework Assignment
4. The current aggregate demand requirements for a firm are shown below for the next six months:
The firm always plans to meet all demand. The firm currently has 120 workers capable of producing 120 units in a month (1 unit/worker). The workforce can be increased (at a cost of $500 per worker) or decreased (at a cost of $1,000 per worker). Inventory holding cost is $100 per unit per month. The firm currently has 40 units of inventory on hand, and it would like to have 40 units available at the end of each month. Regular production cost is $3,000 per unit.
a. What should the aggregate plan be if the inventory holding cost is to be minimized?
b. What is the cost of this plan?
6. JokersRWild makes playing cards in several different styles, but a “standard” deck of cards is used for planning purposes. The average worker at JokersRWild can make 10,000 sets of decks of cards per month at a cost of $1.00 per deck during regular production and $1.30 during overtime. The company currently employs 25 workers. Experience shows that it costs $500 to hire a worker and $500 to fire a worker. Inventory carrying cost is $.25 per deck per month. Given the following demand estimate, develop a six-month production plan based on level production, chase using overtime (no workers will be fired and inventory increases if necessary), and chase by changing workforce level. The beginning inventory is 50,000, and at least that amount is desired each month.
The citation provided is a guideline. Please check each citation for accuracy before use.
8. Appliances Inc. is preparing an aggregate production plan for washers for the next four months. The company’s expected monthly demand is given below in the chart. The company will have 500 washers in inventory at the beginning of the month and desires to maintain at least that number at the end of each month. Below is other critical data:
Production cost per unit = $300
Inventory carrying cost per month per unit = $50 (based on ending month inventory)
Hiring cost per worker = $1,000
Firing cost per worker = $2,000
Beginning number of workers = 10
Each worker can produce 100 units per month
Complete the tables and determine the cost of the two plans
GSCM 530 DeVry Week 3 Homework Assignment
4. Based on the BOM shown below, how many units of part F will be needed if 15 units of end item A are needed? If the company decided to purchase part D from suppliers, how would the BOM change? Assuming part D is purchased, how many units of part F are needed to make 15 units of end item A?
8. Using the information in problem 7, develop an indented BOM
7. Based on the BOM shown below, how many of part D will be needed if 100 units of end item A are needed? How many of part F
12.Complete the MRP record for a bicycle seat
13.Given the BOM and the MPS for end item A, complete the MRP schedule for items A, C, D, and E.
GSCM 530 DeVry Week 4 Homework Assignment
Assignment: page 83, Problems 8 and 9
Assignment: page 491, Problems 18 and 19
New Time Videos (NTV) is a new online video rental service. In the field, it is trying to compete by offering its customers access to all of the major new video releases in one business day. That is, if you order a video from NTV, you can expect it in one business day from the time when you placed the order. When you are done with the video, you simply drop it in the prepaid mailing envelope and return it. All videos arrive in a sorting facility located in the Midwest where envelopes with the videos are opened, checked (right video with the right sleeve, no scratches, no cracks, no dirt on the videos), and made ready to be sent out again. As the manager of this facility, your goal is to turn the returned videos around in 6 hours (a shift is 8 hours long). You have the following information:
a. Calculate the expected average flow time (hint: Use Little’s Law).
b. What changes would you recommend to meet the goal of processing a returned video within 6 hours?
9. PizzaTime Restaurants is building a new pizza place and needs to determine how big to make the various parts of its facility. It wants to be able to accommodate a maximum of 500 customers per hour at its peak times. PizzaTime has collected the following information: the average time to place and receive an order is 1.1 minutes, 20 percent of the customers have cars and require parking spots, and the average length of time at the restaurant is 20 minutes per customer. Assuming a capacity cushion of 20 percent, find:
a. The number of cash registers required. (assume an average of 4 customers per group)
b. The number of parking spaces needed.
c. The number of seats/tables needed. (assume 4 seats per table) d. Which of these operations are likely to be bottlenecks?
18. Calculate the processing load and develop the load profile for the computer assembly process. As the planner, what concerns do you have (if any)? What changes might you consider?
19. Calculate the processing load and available capacity, and develop the load profile for the stereo speaker subassembly. Two employees work the assembly process for 40 hours
GSCM 530 DeVry Week 5 Homework Assignment
4. Answer the following questions for the following network. Times shown are in days.
a. What is the length of the critical path?
b. What are the earliest start and latest start for E?
c. What is the latest start for B?
d. If all other tasks are completed in their expected durations, will the project length be affected if task B actually takes five days instead of the expected three?
6. Consider the following information about a small project:
a. Draw a network diagram.
b. Identify the critical path, earliest start and finish, and slack for each task.
c. Which of these activities should the project manager track most closely?
d. What would happen if a new estimate for task D increases its expected duration from two days to six days? Would the project take longer? Would anything else change?
4. Annie is planning a large surprise party for her sister Gwendolyn. She has developed the plan below, including estimates of the time (in hours) and cost necessary to perform each of the activities required at the currently planned pace and at the crashed pace.
a. Annie is most interested in reducing the time associated with creating the guest list. What is the crash cost per hour for that activity?
b. Annie will save $40 for every hour she can reduce from her plan. Annie has decided to crash her project and use the money she saves to purchase a larger gift for Gwendolyn. Which activity should she crash first?
c. Annie has now crashed activity A by four hours at a cost of $110. What other activity could she crash to further reduce the project?
d. Annie has now crashed activity A by four hours at a cost of $110 and activity E by two hours at a cost of $75. What other activity could she crash to further reduce the project?
e. How much money did Annie save by crashing the project?
f. What is the duration of the fully crashed project?
GSCM 530 DeVry Week 6 Homework Assignment
2. Your eyeglass frame-making firm is considering one of two distribution alternatives. The first is to make all shipments from your Chicago plant to one of three regional warehouses located in Philadelphia, Chicago, and Reno. All orders from eyeglass retailers would be shipped from these sites. The second alternative would be to create one warehouse in Memphis, Tennessee, and ship all orders via Federal Express.
a. Prepare a process flow diagram of each alternative.
b. What additional information would you need to ascertain which alternative will provide the best value to your customers?
c. Is this different from a lower cost solution? Why?
2. The following quarter, Aldo’s senior executive was interested in knowing whether performance had improved. The following table presents order and shipping data collected for the next quarter. How would you answer the senior executive?
3. Suppose a firm, in discussions with customers, learns that customers identify eight factors that they evaluate for every order they receive from suppliers. The firm then finds that its performance is 95 percent on six of these factors and 92 percent on the other two factors. What is the firm’s probable perfect order performance?
4. In problem 3, suppose performance on two of the factors that had been 95 percent falls to 90 percent. What is the impact on perfect order performance?
GSCM 530 DeVry Week 7 Homework Assignment
2. The following table contains data about the inventory for five items at Jones Corporation. Complete the missing items in the table.
3. Suppose Jones Corporation in the above problem determined that its annual inventory carrying cost = 18 percent. The item unit cost was as follows:
Item 1 = $25.00
Item 2 = $60.00
Item 3 = $5.00
Item 4 = $10.00
Item 5 = $1.00
Compute the dollar values for the information in the above table, determine the annual inventory carrying cost for each item, and the total annual inventory carrying cost.
4. Again, using the data for Jones Company in problems 2 and 3, suppose Jones believes that in the upcoming year, the rate of sales expected for each of the five items is as follows:
Item 1 = 4,000 units per day
Item 2 = 2,000 units per day
Item 3 = 15,000 units per day
Item 4 = 7,000 units per day
Item 5 = 2,000 units per day
Compute the days of supply for each item.t start for E?
4. Annie is planning a large surprise party for her sister Gwendolyn