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ABC (Pty) Ltd manufactures medical needles that are subjected to a quality test...
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ABC (Pty) Ltd manufactures medical needles that are subjected to a quality test. They use statistical process control (SPC) and the results (measured in grams) are plotted on a chart. If the process average is 26,3 and the average range is 5, what will the control limits be if the sample size is n=6? The factor for calculation of control limits is 0,483 for sample size, n=6. The sample average is 27,05. Which of the following statement(s) is/are true?
a UCL = 28.715
b The process is out of control.
c The process is under control.
d LCL = 23.885
e UCL = 63.031
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