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Mathematics, 21.12.2019 04:31 carlomorales200
Aquality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are in 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: machine total defectives #1 23 #2 15 #3 29 #4 13 what is the estimate of the standard deviation of the sampling distribution of sample proportions for this process?
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