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HOMEWORK SOLUTIONS FOR MATH 5651 HOMEWORK FOR WEEK 8 OF SPRING 2011
 

Summary: HOMEWORK SOLUTIONS FOR MATH 5651
HOMEWORK FOR WEEK 8 OF SPRING 2011
Text: de Groot and Schervish, 4rd edition
Assignment: 4.1:4,8,11; 4.2: 3,5,9,10; 4.3: 2,3,7; 4.5: 2,4,7,9
Sometimes I write P instead of Pr because it's shorter.
Problem 4 of 4.1
E(X) = (3 + 4 + 3 + 2 + 3 + 9 + 3 + 3)/8 = 30/8 = 15/4.
Problem 8 of 4.1
E(XY ) =
1
0
(
x
0
(xy)(12y2
)dy)dx =
1
0
(
x

  

Source: Anderson, Greg W. - School of Mathematics, University of Minnesota

 

Collections: Mathematics