Question: A Quality Analyst wants to construct a control chart for determining whether four machines, all producing the same product, are under control with regard to
A Quality Analyst wants to construct a control chart for determining whether four machines, all producing the same product, are under control with regard to a particular quality attribute. Accordingly, she inspected 1.000 units of output from each machine in random samples, with the following results: What is the estimate of the process proportion of defectives for whenever it is under control? .08 .06 .04 .02 .01
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