Question

The joint probability density function of X and Y is given by

f(x,y) =

Compute E[X] and P[Y>2]

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- December 17th 2009, 07:14 PMzorroJoint probability density function
Question

The joint probability density function of X and Y is given by

f(x,y) =

Compute E[X] and P[Y>2] - December 17th 2009, 08:35 PMmatheagle
They are indep by inspection.

Both X and Y are exponential with mean 1.

So E(X)=1 and

- December 17th 2009, 09:51 PMzorroI am stuck
- December 17th 2009, 10:04 PMmatheagle
INFINITY since you forgot the negative in the exponent.

DID you read my previous post? - December 17th 2009, 10:23 PMzorroI m stuck
- December 17th 2009, 10:28 PMmatheagle
I'll fix this, but there is to reason to do it this way...

you should know that the derivative and integral of is - December 18th 2009, 12:48 AMzorroNow i am again stuck
- December 18th 2009, 02:03 AMmr fantastic
- December 18th 2009, 02:16 AMzorroThank u so much