Question: 21. A quality technician has collected data on the count of rivet nonconformities in 4-m travel trailers. After 30 trailers, the total count of nonconformities

21. A quality technician has collected data on the count of rivet nonconformities in 4-m travel trailers. After 30 trailers, the total count of nonconformities is 316. Trial control limits have been determined, and a comparison with the data shows no out-of-control points. What is the recommendation for the central line and the revised control limits for a count of nonconformities chart?

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