A Quality Control Inspector Is Monitoring a Filling Process That

question 65

Short Answer

A quality control inspector is monitoring a filling process that is supposed to have an overall average of 330 ml. The average range is 15 ml. If he uses a sample size of 5, what are the upper and lower control limits for the X-bar chart and R-chart? What would the limits be if the sample size were reduced to 4? Which sample size would you recommend, and why?

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