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## Homework Statement

If X and Y have a bivariate normal distribution with [tex]m_X=m_y=0[/tex] and [tex]\sigma_X=\sigma_Y=1[/tex], find:

a) E(X|Y=1) and Var(X|Y=1)

b) Pr(X+Y>0.5)

## Homework Equations

N/A

## The Attempt at a Solution

Apologies, but I don't seem to know where to start on this one.