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Boardwalk Electronics manufactures 250,000 circuit boards per month. A random sample of 3,000 boards is inspected every week for six characteristics. During a recent
Boardwalk Electronics manufactures 250,000 circuit boards per month. A random sample of 3,000 boards is inspected every week for six characteristics. During a recent week, two defects were found for one characteristic, and five defects each were found for the other five characteristics. If these inspections produced defect counts that were representative of the population, what are the dpmo's for the individual characteristics and what is the overall dpmo for the boards? Do not round intermediate calculations. Round your answers to the nearest whole number. The dpmo for one characteristic: The dpmo for each of the other 5 characteristics: The overall dpmo for the boards: The following list gives the number of defects found in 30 samples of 100 electronic assemblies taken on a daily basis over one month. Plot these data on a run chart, computing the average value (center line). How do you interpret the chart? Samples 1-10 Samples 11-20 3 3 7 4 4 5 7 352 6 15 5 2 1 7 1 1 6 Samples 21-30 27 13 12 7 7 4 3 3 6 A. 15 14 13 12 11 10 9 8- 6 5 4+ 3- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 B. 15 14 13 12 11 10 9 8 6 5+ J 3- N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 C. 15 14 13 12 11+ 10 9. 00 6+ 55 4 N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 D. 15 14 13 12 11 10 9 8 7+ 6 5 3- N N m 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 2 Enter data only in yellow-shaded cells. Not for comm 3 4 5 6 Number of defects discovered 3 Number of units 8000 1.6 Number of defect opportunities/unit 7 8 Defects per unit (DPU) 0.000375 9 10 Total number of defect opportunities Defects per million opportunities (dpmo) 12800 234.375 11 Sigma level 4.99800633 12 13 14
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