answer should be 2x 5. Let X andY joint density function if 0r< 1; 0 <y<r...

Question

Question

answer should be 2x
5. Let X andY joint density function if 0r< 1; 0 <y<r 8.ry f(r,y) = 0 elsewhere. What is the regression curve y on r, that is

Answer 1

Answer #1

(i) The marginal pdf of X is fx(x) = f(x) = į f(x,y)dy = $sxydy = 4x? f(x)=4x}, 0<x<1

We know that f(y/x) - MAY 14,0 <y<x, 0<x<1

E(Y|X = ) = yf(y|X = z)dy

= | y-zdy =

answer is 2x/3 and not 2x

Answer 2

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