Question: A high-level voltage power supply should have a nominal output voltage of 350V. A sample of four units is selected each day and tested for

A high-level voltage power supply should have a nominal output voltage of 350V. A sample of four units is selected each day and tested for process-control purposes. The data shown in Table 6E.3 give the difference between the observed reading on each unit and the nominal voltage times ten; that is, xi= (observed voltage on unit i350)10 TABLE6E.3 Vill wee Dala firs Eiviriat 48 Estimate process capability using the x and R charts If specifications are at 35050 calculate Cp, Cpk, and Cpkm

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