To print 8.5 × 5.5 note pads, a copy shop uses standard 8.5 × 11 paper, glues the long edge, then cuts the pads in half so that the pad width is 5.5 inches. However, there is variation in the cutting process. Set up a control chart for the mean width of a note pad, assuming that, in the future, pads will be sampled in random subgroups of 5 pads. Use this sample of 40 observations (widths in inches) to estimate and.
Answer to relevant QuestionsSet up limits for the R–bar chart, given R–bar = 0.82 and n = 6. Find the Cp and Cpk indexes for a process with μ = 720, σ = 1.0, LSL = 715, USL = 725. How would you rate the capability of this process? Explain. Based on the cost of sampling and the presumed accuracy required, would sampling or 100 percent inspection be used to collect data on (a) The horsepower of each engine being in- stalled in new cars; (b) The fuel ...In painting an automobile at the factory, the thickness of the color coat has a process mean of 1.00 mil and a process standard deviation of 0.07 mil. Twenty samples of five cars were tested, resulting in the mean paint ...Refer to the Wheat Chex box fill problem 17.56 with μ = 465 and σ = 3. Below are 30 individual observations on box ll. (a) Prepare a histogram and/or normal probability plot for the sample. Does the sample support the ...
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