1.) X, Y, and Z are random variables. Var(X) = 10, Var(Y) = 20, Z = Y - X. If X and Y are independent, what is Var(Z)?

2.) If Cov(*X*,*Y*) = 10, variance of *X* = 100, variance of *Y* = 81 then the correlation between X and Y is

Subject | Mathematics |

Due By (Pacific Time) | 06/17/2014 08:30 pm |

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