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St41n
Aug7-09, 11:39 AM
If i know that Pr(X_t>b)=0, where X_t>0 and b is positive finite, then should the expectation of X_t be finite? Is there any case where it is infinite?

mathman
Aug7-09, 09:47 PM
Yes. Proof is trival. 0<=X _t <=b implies E(X_t)<=b.