1.

What is the expression for the two sided cusum ARL?

A. ( frac{1}{ARL}= frac{1}{2ARL^-}+ frac{1}{2ARL^+} )
B. ( frac{1}{ARL}= frac{1}{ARL^-} frac{1}{ARL^+} )
C. ( frac{1}{ARL}= frac{1}{2ARL^-}- frac{1}{2ARL^+} )
D. ( frac{1}{ARL}= frac{1}{ARL^-}+ frac{1}{ARL^+} )
Answer» E.


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