Question: In designing a fraction nonconforming chart with center line at
In designing a fraction nonconforming chart with center line at p = 0.20 and three-sigma control limits, what is the sample size required to yield a positive lower control limit? What is the value of n necessary to give a probability of 0.50 of detecting a shift in the process to 0.26?
Answer to relevant QuestionsA control chart is used to control the fraction nonconforming for a plastic part manufactured in an injection molding process. Ten subgroups yield the data in Table 7E.9. (a) Set up a control chart for the number ...Consider the control chart in Exercise 7.26. Find the average run length if the process fraction nonconforming shifts to 0.20. A process has an in-control fraction nonconforming of p = 0.01. The sample size is n = 300. What is the probability of detecting a shift to an out-of-control fraction nonconforming of p = 0.05 on the first sample following ...A process that produces bearing housings is controlled with a fraction nonconforming control chart, using sample size n= 100 and a center line p = 0.02. (a) Find the three-sigma limits for this chart. (b) Analyze the ten new ...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 ...
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