MGT 3121 Lecture Notes - Lecture 6: Process Capability, Confidence Interval, Statistical Parameter

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Using confidence interval we can claim our confidence. That this control chart will contain the population parameter (this case the x bar value and r value) If process out of control-> get into the process and find out what the trouble maker is. Those getting c+ and below are defected in sample. And thus control it by plot the 3 standard deviation control chart. C-chart is the number of defects per unit of output. Count # of students who get c+ and below. Process capability index: indicates whether process is capable of producing outputs that meet quality requirement. Club leaders looking for new board members. They have certain standards these people need to meet. Cpk= services are good but don"t fit our needs. Mu and sigma population will be given. Use it to calculate ucl and lcl. Cpk < 1 process will not produce w/i specified tolerance. Cpk =1 process is centered w/i ucl and lcl.

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