Consider the joint probability density function shown below: fx.y(x, y) = 2/3 3 X 21 y= a) Find Fx,y(x, y). b) Find the marginal fy(y). c) Find E[X|Y = y]. (Note that the equation for the line is y = 3x and fx,y(x, y) is 2/3 for 0≤3x≤y≤3) Fxy (x) = f (x). fy (y) 2

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Consider the joint probability density function shown below:
fx.y(x, y) = 2/3
3
X
21
y=
a) Find Fx,y(x, y).
b) Find the marginal fy(y).
c) Find E[X|Y = y].
(Note that the equation for the line is
y = 3x and fx,y(x, y) is 2/3 for
0≤3x≤y≤3)
Fxy (x) = f (x). fy (y)
2
Transcribed Image Text:Consider the joint probability density function shown below: fx.y(x, y) = 2/3 3 X 21 y= a) Find Fx,y(x, y). b) Find the marginal fy(y). c) Find E[X|Y = y]. (Note that the equation for the line is y = 3x and fx,y(x, y) is 2/3 for 0≤3x≤y≤3) Fxy (x) = f (x). fy (y) 2
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