# Probability question of independent random varaibles

Let $X\sim \mathcal{N}(6,1)$ and $Y\sim\mathcal{N}(7,1)$ be two independent normal variables. Find $Pr(X>Y)$. the answer is $0.2389$ but I do not know how to do it.

• Find $X-Y$ which is itself a random variable , there is formula for combi.ning two random normal variable – abkds Dec 8 '13 at 2:41

Hint: what is the distribution of $Y-X$ ? (1,1)