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18.440 Probability and Random Variables
MIT Department of Mathematics
April 25, 2007
Due: Wednesday, May 2, 2007
Problem Set 9
Problem 1
Chapter 7, #40
Problem 2
Chapter 7, #50
Problem 3
Chapter 7, #45
Problem 4
Chapter 7, #62
Problem 5
Chapter 7, #75
(Follow the hint given.)
Problem 6 Chapter 7, #77 (Hint: First find the marginal density of Y and then
the conditional density of X given Y . Use iterated expectation.)
Problem 7
Chapter 7, Theoretical Exercise #41
1
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