Let X and Y be integrable random variables on the probability space (Ω,F,P)andA be a sub-σ-field of F. Show that (i) if X ≤ Y a.s., then E(X|A) ≤ E(Y|A) a.s.;
Let X and Y be integrable random variables on the probability space (Ω,F,P)andA be a sub-σ-field of F. Show that (i) if X ≤ Y a.s., then E(X|A) ≤ E(Y|A) a.s.;
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.7: Applications
Problem 13EQ
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i)
Let X and Y be integrable random variables on the probability space (Ω,F,P)andA be a sub-σ-field of F. Show that (i) if X ≤ Y a.s., then E(X|A) ≤ E(Y|A) a.s.; (ii) if a and b are constants, then E(aX + bY|A)=aE(X|A)+bE(X|A)
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