Determine the upper and lower control limits, Basic Statistics

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If each sample taken has 500 units, and the average proportion nonconforming is 0.034, what is the upper and lower control limits for the p-chart?

If you sample 450 parts per day from a daily production of 12,000 parts, what is the upper and lower control limits of an np chart if the average percentage of good parts is 97.5%?

If you inspect 50 automobile windshields and find 266 nonconformities, determine the upper and lower control limits for the c-charts. 

If c = 4, determine the sampling plan that will provide the Producer's Risk protection based on a process avererage of 1.1% nonconforming, and assurance that the lot will be rejected 5% of the time. 

C = 4          n = _____

If c = 2, determine the sampling plan that will provide Consumer's Risk protection based on a process average of 2.8% nonconforming, and assurance the lot will be accepted 10% of the time.

C=2            n= _____

Posted Date: 4/2/2013 2:27:54 AM | Location : United States







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