Thread: Statistic Problem
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Old January 7th, 2009, 05:13 AM
zorro zorro is offline
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Default Statistic Problem
Suppose that the joint density of X and Y is given by

f(x,y) = \begin{cases} exp[-(x+y)], & 0 \leqslant x,y< \infty \\ 0, & otherwise \end{cases}

Find E[X] and P(Y>1)
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