Question: Suppose T is a positive random variable with some pdf fT (t). Then E(T) (a) must be a positive random variable. (b) must be a

Suppose T is a positive random variable with some pdf fT (t). Then E(T) (a) must be a positive random variable. (b) must be a positive real number or . (c) will be either positive or negative depending on whether the pdf is positive or negative. (d) is only defined if the support of fT is a finite interval. (e) is only defined if the support of fT is [0, )

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