The average residence time obtained from cumulative age distribution – McqOptions

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1.	The average residence time obtained from cumulative age distribution is ____
A.	τ = \(\frac{ʃtC(t)dt}{ʃ C(t)dt} \)
B.	τ = ʃ tC(t)dt
C.	τ = \(\frac{ʃ tC(t)dt}{ʃ dt} \)
D.	τ = \(\frac{ʃ C(t)dt}{ʃ tC(t)dt} \)
Answer» B. τ = ʃ tC(t)dt

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