2710 005 FINAL A FALL 10 SOLUTIONS

The concerned with reducing costs a delivery manager

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20. The Concerned with reducing costs, a delivery manager uses control charts for  monitoring gas mileage of delivery fleet vehicles. Each week the manager randomly 
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selects mileage and fuel records for 9 vehicles. It is found that the mean mileage is  12.4 mpg; with a known std. dev. of 3  For a 90% CI the width of the entire CI is: A. 1.65 B. 3.29* C. 2.70 D. 5.40 21. If the mean/centerline of a C chart is 6.08; the Upper Control Limit is:  22.  Find the mean [E(x)] of the following discrete probability distribution X 10 30 40 80 100 P(X) 0.10 0.10 0.15 0.35 0.40 Use the following data for questions #23 through #27. Perfume ingredients are very expensive; therefore fill rate is very important.  Example below: Clive Christian No. 1 Pure Perfume          Price : $2,350.0 0
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 Twelve samples are taken of size 5; for process control with a mean target of 20  milligrams per container. Sample         Mean          Range 1           22.8 0.9 2 21.2 0.2 3 20.0 0.6 4 19.3 1.1 5 20.0 0.5 6 23.3 0.2 7 19.9 0.9 8 19.4    0.5 9 20.7 0.3 10 19.8 1.0 11 20.9 2.2 12 22.7 1.4 Totals       250.0 9.8 23. The center line for the  R Chart  is: A. 1.10 A. 0.82* B. 0.98 C. 0.62 24. The center line for the  X-Bar chart  is: 25. The upper control limit for the X-bar Chart is: A.   3.59
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B. 20.83 C. 21.30* D. 19.22 26. The upper control limit for  the R Chart  is: 27.  Considering the X Bar Chart & THE R Chart  for the data above; how many  samples are out of control for these data? Problems #28 through #30 use the following information : As the purchasing  manager, you are in charge of ensuring that shipments of transducers from a new  supplier are acceptable. You are to construct a control chart using the first 12 
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samples of 20 transducers and count the number of nonconforming transducers in  each sample of 20. Sample     Nonconforming           p 1                  0                       .00 2                  2                       .10 3                  3                       .15
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Christopher Reinemann
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