QMS210Winter2024Session2

6. List and explain in detail why we include disturbance term or error term in the model?

CASE STUDY The fastfood industry in the United States has typically used drive-through windows to increasae profitability. With 65% of fastfood revenue derived from drive-through windows. These windows have become the focal point for market share competition among fastfood outlets such as Wendy's, McDonald's, Burger King, Arby's and Taco Bell. Even chains that did not use drive-through windows in the past, such as Starbucks and Dunkin' Donuts have added them to their stores. Production technology changes have included the use of separate kitchens for the drive-through window, timers to monitor the seconds it takes a customer to move from the menu board to the pick-up window, kitchen redesign to minimize unnecessary movement, and scnaners that send customers a monthly bill rather than having pay at each visit. Now, in an attempt to cut costs and increase speed even further, McDonald franchises have tested remote order taking. It takes an average of 10 seconds for a new car to pull up to…

Cost-of-Quality (COQ) Reporting; Spreadsheet Application Carrie Lee, the president of LeeEnterprises, was concerned about the results of her company’s new quality control efforts. “Maybethe emphasis we’ve placed on upgrading our quality control system will pay off in the long run, butit doesn’t seem to be helping us much right now. I thought improved quality would give a real boostto sales, but sales have remained flat at about $10,000,000 for the last 2 years.”Lee Enterprises has seen its market share decline in recent years because of increased foreigncompetition. An intensive effort to strengthen the quality control system was initiated a year ago (onJanuary 1, 2020) in the hope that better quality would strengthen the company’s competitive position and reduce warranty and servicing costs. The following costs (in thousands) relate to qualityand quality control over the last 2 years:[LO 17-5, 17-7]2019 2020Warranty repairs $420 $140Rework labor 140 200Supplies used in testing 4…

VGHC, humanitarian aid service in the Sub-Saharan Africa, operates its laboratory on-site. The lab maintains an inventory of test kits for a variety of procedures. VGHC uses 780 A1C kits each year. Ordering costs are $15 and holding costs are $3 per kit per year. The new price list indicates that orders of fewer than 73 kits will cost $60 per kit, 73 through 144 kits will cost $56 per kit, and orders of more than 144 kits will cost $53 per kit. Determine the optimal order quantity and the total cost.

Sales of Volkswagen’s popular Beetle have grown steadily atauto dealerships in Nevada during the past 5 years (see tablebelow). The sales manager had predicted before the new modelwas introduced that first year sales would be 410 VWs. Using exponential smoothing with a weight of a 5 .30, develop fore-casts for years 2 through 6.

What is the difference between a smooth and layered VES model?

Problem 10-7 (Algo) The postmaster of a small western town receives a certain number of complaints each day about mail delivery.    DAY   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Number of complaints 4 12 16 8 9 6 5 13 14 7 6 4 2 10     Click here for the Excel Data File   a. Determine three-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank - be certain to enter "0" wherever required. Round up any negative control limit value to zero.)      b. Is the process in control?  multiple choice Yes No

What distinguishes smooth and layered VES models?

N5  Managing quality & statistical process control is component of strategic OM decesions which requires decesions that considers facility capacity and production demand. true or false?

ASQ (The American Society for Quality) Defines a Six Sigma project as: Six Sigma is a method for reducing variation in manufacturing, service, or other business processes. Six Sigma projects measure the cost benefit of improving processes that are producing substandard products or services. Whether in manufacturing or service industries, such projects quantify the effect of process changes on delays or rework. The goal of each successful Six Sigma project is to produce statistically significant improvements in the target process; over time, multiple Six Sigma projects produce virtually defect-free performance. The Six Sigma Black Belt project is one that uses appropriate tools within a Six Sigma approach to produce breakthrough performance and real financial benefit to an operating business or company. The tools are generic. It is the structure of the project and the associated process (improvement model) that distinguish a Black Belt project from other similar quality improvement…

Rajan wanted a radio from Jacky's. It appears that Rajan is particularly interested in purchasing a Radio from the inexpensive retailer's sales manager for consumer electronics. He tells Jacky, the salesperson at the inexpensive store where he thinks he'll get the best deal, that his old radio died and he wants to listen to his favourite tunes. He wants a replacement radio as quickly as possible. In three and a half weeks, Rajan's favourite model will be 10% off.He suspects Rajan won't wait and will find another job. Jacky will earn less on the lowered price. He thinks that telling Rajan of the sale makes little sense.When Jacky tells Rajan that the radio set he wants is no longer available and won't be for another week, Rajan is enraged. Fearing losing the business, Jacky begs his sales manager, Michelle, to speed up delivery. Michelle says it's impossible and suggests Jacky tell Rajan the store can get the set in 24 hours and sell him the demo model. Michelle says the sample is new…

SCENARIO 2: Misleading for Good Purpose Vince is the inspector in charge of their local police station. The police station building is in direct need of repairs, but hasn’t received any grants from the government for years. One day, a typhoon hits a nearby area that damages most of the houses and shops. Although Vince’s police station gets partially damaged, most of the structure remains intact. Due to the incident, the government will send a disaster assessment team to ascertain the level of damage and will provide relief money for the affected areas. The Deputy Superintendent Mr. Simon, orders Vince and says: “Hire some laborers and destroy the remaining structure of the police station building. When the disaster assessment team comes, tell them that the building collapsed because of the typhoon, and ask them to give priority in funding the rehabilitation of our police station. After all, it is one of the most important public offices in town.” Vince wants to do the right thing and…

In response to intensive foreign competition, the management of Florex Company has attempted over the past year to improve the quality of its products. A statistical process control system has been installed and other steps have been taken to decrease the amount of warranty and other field costs, which have been trending upward over the past several years. Costs relating to quality and quality control over the last two years are given below:     Costs (in thousands) Last Year This Year Inspection $ 720 $ 909 Quality engineering $ 450 $ 765 Depreciation of test equipment $ 675 $ 270 Rework labor $ 1,080 $ 1,530 Statistical process control $ 0 $ 225 Cost of field servicing $ 1,350 $ 1,260 Supplies used in testing $ 45 $ 81 Systems development $ 720 $ 900 Warranty repairs $ 3,780 $ 1,620 Net cost of scrap $ 630 $ 1,170 Product testing $ 900 $ 1,800 Product recalls $ 3,150 $ 900 Disposal of defective products $ 810 $ 1,080 Sales have been flat over the…

Problem 10-5 (Algo) Using samples of 196 credit card statements, an auditor found the following:Use Table-A.  Sample 1 2 3 4 Number with errors 4 3 6 9     Click here for the Excel Data File   a. Determine the fraction defective in each sample. (Round your answers to 4 decimal places.)      b. If the true fraction defective for this process is unknown, what is your estimate of it? (Round your answer to 1 decimal place.)    c. What is your estimate of the mean and standard deviation of the sampling distribution of fractions defective for samples of this size? (Round your intermediate calculations and final answers to 4 decimal places.)    d. What control limits would give an alpha risk of .03 for this process? (Round your intermediate calculations to 4 decimal places. Round your "z" value to 2 decimal places and other answers to 4 decimal places.)      e. What alpha risk would control limits of .0470 and .0092 provide? (Round your intermediate calculations to 4 decimal…

1.Introduction to the Six Sigma methodology 2.Construct Six Sigma approach by adapting appropriate quality tools for each phase of the DMAIC stages utilising the DMAIC model. 3.Compare the benefits of the generated model to the findings of the literature review to discuss the benefits. 4.Examine the consequences and advantages of implementing Six Sigma in the industrial and service industries.

Which is larger, Ws or Wq? Explain.

SSS's Experiment: Choosing an Appropriate Research Design Soft Space Solutions (SSS) is a software company that develops customised software solutions. The expertise of its employees in developing various products and the quality that is imbibed into the products has gained clients for the company from across the world. However, due to the US financial crisis of 2008, the company lost some of its projects and thereby had to lay off some of its employees. The financial crisis brought in a mixed experience for the company-few pleasant and few unpleasant. The company observed that the productivity of the remaining staff had increased almost by 30%-40%. It also observed that the attrition rate of its employees had also come down from 25% to 4% during 2008-2009 However, with the economic situation now coming to normaley, the company bagged some new projects. It started its recruitment process again. With improvements taking place in the economic and job scenario, the company is now finding…

A PowerPoint presentation of fifteen slides of the effects of inadequate waste collection and challenges of management at Sustainable Barbados Recycling Centre Inc.

Compute CL, UCL, and LCL of MR and X Control Charts for the following data. Batch Number Flowrate X Moving Range MR 1 49.6   2 47.6   3 49.9   4 51.3   5 47.8   6 51.2   7 52.6   8 52.4   9 53.6   10 52.1

Explain the use of full and fractional factorial experimental designs. Provide a scenario of when it would be appropriate for each.

Mr. A wants to study the salient factors that may influence the adoption of Social Networking Sites (SNS) for educational purposes. For this, he identifies the variables such as trust (TR), emotional attachment (EA), resource and material sharing (RA), communication (COM), and collaboration (COL) that may affect the adoption of the Social Networking Sites (SNS). Confirmatory Factor Analysis (CFA) was employed to perform reliability and validity checks, and Structural Equation Modelling (SEM) was employed to test the proposed conceptual model. This study could help instructors and managements at higher educational institutions to formulate strategies to encourage the students to use social networking sites for academic purposes.   Based on the above information, answer the following questions.                                    Develop the conceptual model of the study. Develop the alternative hypothesis of the study. Develop the research objective of the study. Suggest the target…

q10-  What is the best description of Granger-causality? Select one: a.   the ability of lags of one variable to contribute to the forecast of another variable   b. the ability of a variable to predict its own future c. the ability of the one variable to explain it own past d. None of the above Clear my choice