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

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  •  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= _____

  • If the process average is 0.19% nonconforming, what single sampling plan is recommended using the Dodge-Romig LQ tables if LQ is 1.0% and the lot size is 8000?  Also, what is the AOQL?

n= _____           c = _____          AOQL = ______


 
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