Questions and Answers of Fundamentals Of Quality Control

The Biloxi Baby Buggy Company is preparing to develop a production plan for the next four quarters. They have a history of poor planning and they want to improve by using a structured approach. They
The Whoareyoukidding TV Company has just completed the demand forecast for their 85-inch TV for the next year. The demand forecast is:The following policies are in place:.. They are not allowed to
The Shine-on Specialty Lamp Company has made the following quarterly forecast for aggregate specialty lamps requirements for the next four quarters (it may look like a lot, but it's really light
The Shafer Company has the following demand data for the last 2 years of sales for all models of their popular Polybob product:The Shafer Company currently has five employees on the Polybob line,
The basic reorder point assumes you will order as soon as you reach the reorder point. What happens if the item is only one of several that is ordered from the same supplier? Discuss how joint
Describe the type of inventory policy you might find in each of the following operations, and describe why-a hospital, a cafeteria, an automobile repair facility, a bakery, and a dental office.
One of the products stocked by Joe's Club is IoesCola, which is sold in cases. The demand level for IoesCola is highly seasonal.• During the slow season, the demand rate is approximately 650 cases
Continuing with the basic information in problem 3, during the busy season, the store manager has decided that 98% of the time, he does not want to run out of IoesCola before the next order arrives.
Because computer technologies become obsolete so quickly, a well-known computer manufacturer is thinking about raising holding costs from 30% of item cost to some higher percentage. What will be the
The following data exists for the computer manufacturer in problem #5:a. Calculate the economic order quantity for the monitor. Round your answer to the nearest whole number.b. Suppose the company
The Polybob Company is looking at total inventory costs for some of their "A"items in inventory. They cycle count all the "A" items four times a year, and given that they use only skilled people,
You are in charge of inventory for Bongo's Appliance Outlet. The recent demand for the Gremlin brand of microwave ovens has followed the following pattern:Bongo's recognizes a carrying cost of 23%
Product A is an ATO product. It has a lot size of 150, and currently has an onhand inventory of 110 units. There is a 2-week demand time fence and a 12-week planning time fence. The following table
Suppose that a master scheduler consistently finds that there is inadequate capacity to produce the product the facility needs in order to satisfy customer demand.What actions should they take and
How are Sales and Operations Plans and Master Schedules different for pure service operations as opposed to manufacturing? What is (are) the major causes of the differences?
Describe in your own words why the minimum time horizon for a master schedule should be longer than the assembly time for the final product.
a. Given the following master schedule, fill in the Projected Available and Available to Promise rows:b. A customer wants an order of 100 in period 4.What can you tell them?c. The customer from part
What do you tell them now?d. Sales has requested that you add a MPS of 200 in period 9 to cover their needs for a sales promotion. What do you tell them and why?e. What action (if any) should be
Evaluate and discuss the following comments recently overheard:a. "Operations managers have very little to do with customer demand except to input the orders into the master schedule."b. "The major
Fill in the following master schedule with the Projected Available and the Available-to-Promise sections, then answer the questions:Demand Time Fence = 3 Planning Time Fence = 10 On-hand = 46a. Is
The following is the MPS for Item J with Option 1a. Complete the projected available and ATP calculations for the end item shown aboveb. Calculate the unconsumed forecast for the end item, Item J.c.
Chester's Chippers makes oversized golf clubs. The company president has asked you to show her how master scheduling techniques could be applied to her business.You have the following data:a.
What do you think should happen if you were asked to allocate some inventoryfor R&D, but by doing so you would drop below safety stock levels?
Product Y is made from one component P, three components Q, and two components R. P is made from two part S, Q is made from one S, and R is made from two part S and three part T. Other data
Product "X" has the product structure given below. In addition, relevant details for each component are given.a. Complete the master schedule and create MRP records for each of the components.b.
Product A is made from two components, Band C. It takes one B and three Cs to make a single product A. Component B is made from two part Ds. Component C is made from one part D and 2 part Cs. Use
Use the attached MRP record blanks to complete the records for components B, C, D, and E, to answer the three questions. Item A is the finished product, made from one B and two Cs. Item B is made
a. Product A is made from three Bs and two Cs. Subassembly B is made from two Es and one D. Subassembly C is made from one E and two Ds. Given this information and that below, fill in the MRP
The figure below shows the bill of material (BOM) for the Acme PolyBob. Complete the MRP records on the next page. All the information you need is shown in the BOM and on the MRP records.B Lead time
Complete the MRP records on the next page. Note the following:.. Production plans for the 800 Deluxe computer system are as follows:.. Start assembling 2,500 kits in Week 2 .. Start assembling 3,000
Acme Tool & Manufacturing Company makes a wide variety of lawn care products.Acme's products are sold under various brand names, and are available at retail outlets. One of Acme's products is the
The Acme Electronics Company makes two models of Wyle E. Coyote tape players.While there are differences among the products, there are also common parts Each model A is made from 1 subassembly C and
There are two products being produced by a firm with the following bills of material:Routing Information (all times in hours)With this information, set up the capacity bills and determine the
Describe how the following conditions have potentially been caused by poor capacity planninga. Expeditingb. Premium shipping cost from suppliersc. Poor equipment utilizationd. Poor worker
The following input/output report was prepared for a work center with a beginning backlog of 10 hours:a. Complete the input/output report for the center.b. What recommendations would you make to the
The following capacity bills are given for Items Sand R:a. In week 1 there is an MPS of 60 Ss and 70 Rs. Week 2 MPS quantities are 50 Ss and 90 Rs. What are the capacity requirements for each work
Given the following bills of material and routing information, develop capacity bills for each of the products P and Q: P D A B(2) B C(3) A(2)
a. Fill in the missing data on the following input/output report. Then answer the questions concerning the report. The work center has a beginning backlog of 25 hours. All values in the report are in
Items P and Q have capacity bills as follows:a. In week 1 there is an MPS quantity of 90 Ps and 75 Qs. In week 2 the MPS quantity calls for 78 Ps and 103 Qs. What are the capacity requirements for
The following input/output report was prepared for a work center with a beginning backlog of 23 hours:a. Complete the input/output report for the center.b. Explain what the center was probably trying
Birchmark Industries makes two items for the furniture industry: end panels and shelves. Routing and standard time data for the two items are shown below.Assume that the three operations above are
Describe the environment where detailed capacity planning may become difficult if not impossible to use effectively. Would rough-cut capacity planning be more effective in such an environment? Why or
Discuss the impact that job standards may have on the major activities of PAC.Given that job standards are seldom exact and impacted by learning, what are the implications for the major PAC
Ben's Bike Shop has the following repair jobs awaiting Ben when he arrives in the morning for his typical lO-hour work day. All the bike repair jobs listed below were promised to their owners to be
A new job has just arrived at a production facility. It is currently the start of day 143, and we assume 8 hours of productive capacity available per day. The job calls for the production of 200
An operation manager was heard saying, "I don't have to make a decision to use forward or backward scheduling, since I use MRP. The MRP system makes that decision for me." Discuss-do you agree or
The following jobs are waiting for processing at a work center. There are 7 hours in each productive day. It is currently the start of day 211.The due days are all when the jobs are due by the end of
Discuss how inventory disguises possible problems in the production system.
Discuss the implication of the following statement: "Inventory that exists between operations, regardless of the reason for it, will act to decouple those operations."
Discuss how a lean production system can still operate effectively under uncertain market conditions-or can it?
Will moving to a lean production system alter the approach to sales and operation planning? If so, how and if not, why not?
Suppose an operation has just decided to move to lean production. They see all the "lists" of suggested changes to become lean, but have some questions:"Do we need to implement all the
Can you have a lean production system without using pull production? Why or why not?
A certain work center uses 20 of a certain item per hour. The standard containers they use hold 50 of the items, and it takes 40 minutes lead time to replenish a container.They use a safety factor of
React to the following statement, justifying your reaction: "We should start implementing lean production by forcing suppliers to deliver smaller quantities more rapidly, and we should forget putting
How would you suggest that capacity planning be done with a lean production system - or is it even important to do capacity planning?
Describe the possible special challenges to implementing TOC in a make-to-order environment.
Describe the possible implications of a major change in product mix or a major change in design to a TOC-run operation. How would you approach dealing with those implications?
Compare and contrast the design of the drum-buffer-rope system and the pull system described in Chapter 9.What are the similarities and differences, and why do they exist?
Comment (with supporting reasons) on the following overheard statement, stated by an operations manager: "We don't have any constraints in our company. Our capacity plans show we have plenty of
Discuss the implication that TOC can bring to a company when they develop their business strategy. How will it possibly impact the approach taken to the sales and operations planning process?
Do you believe that TOC will have any impact on other functions in the organization?If so, what might they be? In specific, comment on the possible implications to:• Engineering• Human
Explain how supplier partnering may be different for a firm that is a lean production firm when compared to one that uses a standard push system such as MRP.
For a system that uses MRP or ERP, where would the inputs for the purchasing system come from for production parts? What about MRO material?
A product with independent demand has a unit cost of $50. The order cost is $41 per order. The annual inventory holding cost is 15% of the item cost per year. The average annual demand is 75,000
Explain how lean production approaches could change distribution approaches and why.
A company has a central warehouse in Chicago that supplies the demand of three branch warehouses: one in Baltimore, one in New Orleans, and one in Cleveland.The following tables provide the relevant
The Acme Company offers a price discount for ordering Acme Jungflogs:The Ace Company uses the Jungflogs, and has the following inventory data:Holding cost 23% of item cost per year Order cost $19 per
The BriteLite Company currently purchases 20,000 lamp bases a year from the Baseless Company. BriteLite recognizes an annual holding cost of 20% and an order cost of $15 per order. Currently they
Think of some of the leading indicators that could be used as a major input to causal forecasts in the economy. Discuss their use.
Which type of forecasts would most likely be used for Sales and Operations Planning(S&OP), and why are they the most appropriate?
What value does it bring to an operation if a forecasting method is used that only forecasts for families of products?
Think of at least three products recently introduced that would probably use the life-cycle analogy. What products would they "copy"? Why is life-cycle appropriate for those products?
How should a company include information for their forecast that indicates the economy is headed for a recession? How, if at all, should that information impact time-series forecasting information?
Discuss the arguments for using a large smoothing constant for exponential smoothing instead of a small one. Under what conditions would each be better? Why?
Describe in your own words why using the MAD is better for describing the forecast error than is the MFE. What is the major use of each? Should they really be used together? Why or why not?
Given the following data:a. Calculate the three-period moving average for period 5.b. Calculate the exponential smoothed forecast for period 5 using an alpha value of 0.4. Assume the forecast for
Given the following demand data:a. Calculate the four-period weighted moving average for period 9 using weights of 0.1, 0.2, 0.3, and 0.4 where the 0.4 is the weight for the most recent period.b.
Given the same data for the previous problem:a. Use Excel or some other statistical computer package to calculate the regression equation for the data.b. Use the regression equation to forecast the
A forecasting method resulted in the following forecasts shown by the data in the following table:a. Use the data to calculate the MAD.b. Find a regression equation for the demand data.c. Use the
The following demand data was collected over a 3 year period for one product:Use the data to develop a regression-based forecast. Be sure to note that there is a seasonal factor to the demand. Month
The following information is presented for a product:a. What is the MAD for the data above?b. Given the information above, what should the forecast be for the first quarter of 2000 if the company
The following information is presented for a product:a. What are the seasonal indicies that should be used for each quarter?b. What is the MAD for the data above? 2001 2002 Forecast Demand Forecast
Consider the forecast results shown below. Calculate MAD and MFE using the data for months January through June. Does the forecast model under- or overforecast? Month Actual Demand Forecast January
Compare and contrast Taguchi’s loss functions for the situations target is best, smaller is better, and larger is better. Give examples in the hospitality industry.
Refer to Exercise 11-17.(a) Is there a difference between the mean degree of lateness of company 3 and that of the averages of companies 1 and 2? Test at the 5% level of significance.(b) Find a 90%
Refer to Exercise 11-18.(a) Is there a difference in the mean number of passengers bumped using software packages 1 and 2 from that using software packages 3 and 4? Test at the 10%level of
Refer to Exercise 11-19. Find a 90% confidence interval for the difference in the mean effectiveness of program 1 and the average of that using programs 2 and 3.
Refer to Exercise 11-20. Consider the following three contrasts: (1) difference between the sum of the reduction in blood sugar levels using diet types 1 and 3 from that using diet types 2 and 4; (2)
In Exercise 11-31, use AB as the confounding factor to divide the experiment into two blocks. How would you estimate the effect of factor A?
Refer to Exercise 11-36. The manufacturer is considering adopting a new process to reduce the variability in the thickness of coating. It is estimated that the additional cost for this improvement is
Refer to Exercise 11-36. Suppose that the manufacturer can rework the thickness prior to shipping the product at a cost of $2.00 per reel. What should the manufacturer’s tolerance be?
Refer to Exercise 11-36. Suppose the manufacturer has the ability to center the process such that the average thickness of the coating is at 0.005mm, which is the target value. In doing so, the
Refer to Exercise 11-40. The restaurant is thinking of hiring more personnel to cut down the service time. However, the additional cost of increasing personnel is estimated to be $0.50 per customer.
Consider Exercise 11-46. With the assignment of factors A, B, C, and D to columns 1, 2, 3, and 4, respectively, of an L9 orthogonal array, the output is as follows for another replication of the nine
In a food processing plant, four design parameters, A, B, C, and D, each at three levels, have been identified as having an effect on the moisture content in packaged meat. Three noise factors, E, F,
shows the moisture content in a coded scale for four replications of each of the nine experiments in the inner array. It is preferable that the moisture content be around a coded value of 20.Show the
Consider Exercise 11-48. The design factors are A, B, C, and D, each at three levels.These are assigned to an orthogonal array (inner array) with the factors A, B, C, and D assigned to columns 1, 2,
shows the moisture content of the eight replications for each of the nine experiments in the inner array. The coded target value is 20.Show the complete parameter design layout using the Taguchi
Refer to Exercise 12-1. What null hypothesis would you test to determine if contract cost is significant in the presence of the other independent variables? What null hypothesis would you test to

Showing 100 - 200 of 319