1.

When the EWMA charts are in operation for quite a long period, what will be the value of the UCL of the chart?

A. UCL= ( _0+L sqrt{ left { frac{ }{2- } right }} )
B. UCL= ( _0-3L sqrt{ left { frac{ }{2- } right }} )
C. UCL= ( _0+2L sqrt{ left { frac{ }{2- } right }} )
D. UCL= ( _0-L sqrt{ left { frac{ }{2- } right }} )
Answer» B. UCL= ( _0-3L sqrt{ left { frac{ }{2- } right }} )


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