- #1

Shackleford

- 1,656

- 2

For (4), when I calculated the Distribution Function, I had to break it up into two cases whether or not the point was above or below the line.

For (6.c), I got the right answer for the Cov(X,Y), but I didn't break up the double integral into two cases. Is this because since the density function has the condition that y is less than or equal to x, it is inherent to the double integral? That's why I was able to set the limits of integration of y from 0 to x?

http://i111.photobucket.com/albums/n149/camarolt4z28/2-2.png?t=1302966321

http://i111.photobucket.com/albums/n149/camarolt4z28/Untitled-3.png?t=1302966341

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110416_100322.jpg?t=1302966359

For (6.c), I got the right answer for the Cov(X,Y), but I didn't break up the double integral into two cases. Is this because since the density function has the condition that y is less than or equal to x, it is inherent to the double integral? That's why I was able to set the limits of integration of y from 0 to x?

http://i111.photobucket.com/albums/n149/camarolt4z28/2-2.png?t=1302966321

http://i111.photobucket.com/albums/n149/camarolt4z28/Untitled-3.png?t=1302966341

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110416_100322.jpg?t=1302966359

Last edited by a moderator: