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D Question 8 0.85 pts C&A wants to see if the accuracy of the prices that...
The Canine Gourmet Company produces delicious dog treats for canines with discriminating tastes. Management wants the box-filling line to be set so that the process average weight per packet is 47 grams. To make sure that the process is in control, an inspector at the end of the filling line periodically selects a random box of 8 packets and weighs each packet. When the process is in control, the range in the weight of each sample has averaged 7 grams....
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
1) Triangle Packaging Machinery wants to test the quality of its cereal bag filling machines. The firm’s quality analyst took 35 samples of size 7 each from a cereal-bag-filling machine. The results were overall mean = 57.75 pounds; average range = 1.78 pounds. a) Determine the upper and lower control limits of the x-chart, where sigma = 3 b) Determine the upper and lower control limits of the R-chart, where sigma = 3 2) The results of an inspection of...
Computer upgrades have a nominal time of 80 minutes. Samples of five observations each have been taken, and the results are as listed. SAMPLE 1 2 3 4 5 6 79.2 80.5 79.6 78.9 80.5 79.7 78.8 78.7 79.6 79.4 79.6 80.6 80.0 81.0 80.4 79.7 80.4 80.5 78.4 80.4 80.3 79.4 80.8 80.0 81.0 80.1 80.8 80.6 78.8 81.1 Factors for three-sigma control limits for x¯ and R charts FACTORS FOR R CHARTS Number of Observations in Subgroup, n...
Management at Webster Chemical Company is concerned as to whether caulking tubes are being properly capped. If a significant proportion of the tubes are not being sealed, Webster is placing its customers in a messy situation. Tubes are packaged in large boxes of 145145. Several boxes are inspected, and the following numbers of leaking tubes are found: Sample Tubes Sample Tubes Sample Tubes 1 11 8 22 15 55 2 99 9 88 16 44 3 44 10 22...
1 - Almost all processes, regardless on whether they are goods or services, exhibit some type of variation in their output. For example, a box of cereal may say that it contains 16 ounces, but in reality, it may be a little bit more, or a little bit less. The machine pouring the cereal into the box may not be adjusted properly, and it may only put 15.8 ounces in each box, on the average. This would be considered an...