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Thirty samples of size 3 resulted in an overall mean of 16.51 and average range of 1.30. compute con-troll limits fox x- and r-charts.
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Twenty-five samples of size 5 resulted in an overall mean of 5.42 and an average range of 20. compute control limits for x and R- charts, and estimate the standard deviation of the process
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twenty-five samples of 100 item each were inspected, and 68 were found to be defective. compute control limits for a p-chart
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at a pizza restaurant, a 20 week study of 30 pizzas per week found a total of 18 pizzas made improperly. Construct a p-chart to monitor this process.
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suppose that a specification calls for LTL = 2.0, and UTL = 6.0 A sample of 100 parte found m = 4.5 and q = 0.5.compute Cp,Cp1, Cpu, and Cpk. should the manager consider any action based on these results؟