EBK OPERATIONS MANAGEMENT
12th Edition
ISBN: 8220100283963
Author: Stevenson
Publisher: YUZU
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Chapter 10, Problem 10DRQ
Summary Introduction
To define and contrast: Control limits, specifications and process variability.
Introduction:
Control chart:
It is a graph used to analyze the process change over a time period. A control chart has an upper control limit, and lower control which are used plot the time order.
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Chapter 10 Solutions
EBK OPERATIONS MANAGEMENT
Ch. 10.2 - A potato chip is a delicate thing Fragile A pound...Ch. 10.2 - A potato chip is a delicate thing Fragile A pound...Ch. 10.5 - It's estimated that more than 7 000 hospital...Ch. 10.5 - It's estimated that more than 7 000 hospital...Ch. 10 - Prob. 1DRQCh. 10 - Prob. 2DRQCh. 10 - Prob. 3DRQCh. 10 - Prob. 4DRQCh. 10 - Prob. 5DRQCh. 10 - Prob. 6DRQ
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- Production phase After the pre-production phase, the product entered the production phase without introducing any changes in the process. Since it seemed to be stable SPC was not performed for several months, with process stability and variability being assessed by the level of nonconformities it it produced. However, after a time, an increasing number of customer complaints due to products supplied outside the specification/. The Quality Engineer decided to take 20 samples from the process with regular spacing between samples. Each sample is made up of 3 parts. The data obtained for the highlighted dimension samples are presented in Table 2 below: measurements in mm for critical sample dimension number 1 2 3 4 5 6 7 8 9 Observations 2 3 50.767 1 50.972 50.785 50.956 50.97 50.914 51.066 50.933 51.086 50.917 51.081 51.092 50.948 50.828 51.054 50.859 51.083 50.789 50.984 50.961 50.943 51.013 51.02 50.734 50.898 50.956 50.885 51.004 50.984 50.839 Table 2: Measurements in mm for critical…arrow_forwardplease provide upper and lower limitsarrow_forwardK- The Tyler Apiaries sells bees and beekeeping supplies Bees (including a queen) are shipped in special packages according to weight. target weight of a package is 1.2 kg. Historically, Tyler's shipments have weighed on average 1 2 kg, with a standard deviation of 0.07 kg a. The lower and upper tolerance limits are 1.1 kg and 1.3 kg, respectively The process capability ratio is 0476 (Enter your response rounded to three decimal places) capable of meeting the tolerance limits 99 7% of the time Tyler Apiariesarrow_forward
- please explain the terms variety, variability, volume and visibility in terms of the the 4 Vs?arrow_forwardIsidel the below Causal diagram: D Which variables must necessarily be controlled for to identify the effect of X on Y? Do not select variables to control for unless they are necessary to identify effect. OB O It's not possible to identify the effect of X on Y OYarrow_forwardwhy does the control the experiement not fall within the expected ranges of controls (quality control)?arrow_forward
- Defining Quality: The Dimensions of Qualityarrow_forwardDistinguish between the expenses of conformity and nonconformance, and explain how they both affect the overall cost of quality.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
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