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Mathematics 20 Online
OpenStudy (anonymous):

Joint Probability Function

OpenStudy (anonymous):

OpenStudy (anonymous):

i am just lost on this problem

OpenStudy (tkhunny):

Just build the table.

OpenStudy (tkhunny):

Do you see how to do it? The top grid is the given probabilities, given the specified values of X and Y. The bottom grid is the sum of X+Y. Which of these fit the criteria?

OpenStudy (anonymous):

i see it, so to find the p(X+Y>3), would i add up the joint probabilities that are greater than 3?

OpenStudy (tkhunny):

That's it. I colored them yellow, for you. Can you do the X*Y now?

OpenStudy (anonymous):

Yes, Thank you!

OpenStudy (dan815):

ty tkhunny

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