Recent content by Ryuuzakie

  1. R

    Conditional expectations of bivariate normal distributions

    Hey guys, I'm having a bit of a problem with this question... Homework Statement If X and Y have a bivariate normal distribution with m_X=m_y=0 and \sigma_X=\sigma_Y=1, 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...
  2. R

    Joint Probability functions (finding marginals)

    Homework Statement f\left(x,y\right)=\left\{\begin{array}{cc}\frac{1}{y} ,&\mbox{ if } 0 \leq x \leq y, 0 \leq y \leq 1 \\ 0,&mbox{ otherwise } \end{array}\right. Find the marginal distributions (pdf and cdf) of X and Y Find Pr(X+Y>0.5) Homework Equations N/AThe Attempt at a Solution...
  3. R

    Sum of two continuous uniform random variables.

    Hey guys, I've been reading this up (thanks for the detailed explanation!). My question is what if Z = 2X+Y? How would the distribution of fz change?
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