The fraction nonconforming control chart in Exercise 7.3 has an LCL of zero. Assume that the revised control chart in part (b) of that exercise has a reliable estimate of the process fraction nonconforming. What sample size should be used if you want to ensure that the LCL > 0?
Answer to relevant QuestionsA fraction nonconforming control chart with n = 400 has the following parameters: UCL = 0.0962; Center line = 0.0500; LCL = 0.0038. (a) Find the width of the control limits in standard deviation units. (b) Suppose the ...Construct a standardized control chart for the data in Exercise 7.11. In Exercise 7.11 Consider the data in Exercise 7.52. Suppose we wish to define a new inspection unit of four tape decks. (a) What are the center line and control limits for a control chart for monitoring future production based on the total ...Find 0.975 and 0.025 probability limits for a control chart for nonconformities when c = 7.6. Using the cumulative Poisson distribution: Reconsider the loan application data in Table 7E.2. Set up the fraction nonconforming control chart for this process. Use the standardized control chart approach. Plot the preliminary data in Table 7E.2 on the chart. Is the ...
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