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Unformatted text preview: b) Are X-bar and R charts in control? Use both control limits and nonrandom pattern rules. 2. n construction units are inspected each day and the number of nonconforming units D are recorded each day, we have 20 days of data. The data is given in the separate excel file in blackboard in sheet 2. a) Plot P chart. b) Are P chart in control? Use both control limits and nonrandom pattern rules....
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- Winter '10