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Determine the Trial UCL for a Fraction Nonconforming Chart for May

Question 12

Short Answer

Determine the trial UCL for a fraction nonconforming chart for May 8 where the trial central line is 0.012. Is May 8 in control or out of control and why?  Date  Number  Number  Inspected  Nonconforming  May 7 60011 May 8 43528 May 9 5826=10,000=120\begin{array} { l c c } \text { Date } & \text { Number } & \text { Number } \\ & \text { Inspected } & \text { Nonconforming } \\\text { May 7 } & 600 & 11 \\\text { May 8 } & 435 & 28 \\\text { May 9 }& 582 & 6 \\& \square = 10,000 & \square = 120\end{array}

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UCL = 0.028; p = 0.0...

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