The average residence time obtained from exit age distribution is ___ – McqOptions

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1.	The average residence time obtained from exit age distribution is ____
A.	τ = t2ʃ tC(t)dt
B.	τ = \(\int_0^∞\)E(t)dt
C.	τ = \(\frac{ʃ tE(t)dt}{ʃ E(t)dt}\)
D.	τ = \(\frac{ʃ tC(t)dt}{ʃ dt}\)
Answer» C. τ = \(\frac{ʃ tE(t)dt}{ʃ E(t)dt}\)

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