(Solution Download) The percentage of potassium in a compound is expected to


The percentage of potassium in a compound is expected to be within the specification limits of 18 to 35%. Samples of size 4 are selected, and the mean and range of 25 such samples are shown in Table 7-25. It is desirable for the process nonconformance to be within 1.5%. If the acceptable level of type I error is 0.05, find the modified control limits for the process mean.

 







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