EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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Chapter 16, Problem 4CSQD
Summary Introduction
Interpretation:
Process capability indexes to meet design specification and recommendations.
Concept Introduction:
Process capability index is a measurement tool to know the capability of the process for output. It shows whether under normal variation, output production goes out of the limit specified or not.
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Explain how process capability (Cp and Cpk) is statistically useful in Six Sigma?
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- Suppose you are investigating the percentage of dissatisfied customers, taking a survey of 100 customers per day over the course of 30 days. You find that, on average, 20% of customers are dissatisfied. What would the UCL of the appropriate control chart be, using Z = 3? Group of answer choices a Less than 0 b 0 c Greater than 0 but less than 0.2 d Greater than or equal to 0.2 but less than 0.4 e Greater than or equal to 0.4 but less than 0.5 f Greater than 0.5arrow_forwardThe operations manager of thebooking services departmentof Hometown Bank is concerned about the number ofwrong customer account numbers recorded by Hometownpersonnel. Each week a random sample of 2,500 depositsis taken, and the number of incorrect account numbers is recorded. The results for the past12 weeks are shown in thefollowing table. Is the bookingprocess out of statistical control? Use three-sigma controllimits, which will provide a typeI error of 0.26 percent.arrow_forwardIn 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…arrow_forward
- Management of quality is the aspect of management that is concerned with achieving, maintaining and improving quality of products or services. All activities of an organization affect quality in some way or another. Hence, quality management should involve all aspects of management including planning, leading, organizing and controlling, and to recognize the quality function as an integral part of the overall management function. A)Generate FIVE reasonable principles of quality function derive from the above thought. B)Examine how quality improvement affects the healthcare system.arrow_forward4. Problem 8.29 The number of imperfections in bond paper produced by a paper mill is observed over a period of several days. Table 8-28 shows the area inspected and the number of imperfections for 25 samples. Construct a control chart for the number of imperfections per square meter. Revise the limits, if necessary, assuming special causes for the out-of-control points. TABLE 8-28 Area Area Sample Inspected (m?) Imperfections Sample Inspected (m²) Imperfections 1 150 6 14 300 8 2 100 8 15 300 12 3 200 5 16 200 6 4 150 4 17 150 4 250 10 18 200 7 6. 100 11 19 150 14 7 150 20 100 4 8 200 5 21 100 8 9 300 10 22 200 10 250 10 23 300 12 11 100 24 250 7 12 200 4 25 200 5 13 250 12arrow_forwardPTI The postmaster of a small western town receives a certain number of complaints each day about mail delivery. Number of complaints UCL LCL 1 4 2 3 11 16 Click here for the Excel Data File 17.138 0.000 4 8 5 9 6 6 DAY 7 8 5 14 a. Determine two-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.) 9 15 Drev 10 11 12 13 14 7 6 4 2 11 12 of 11 Next Check my workarrow_forward
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