Exam P Practice Question 939
Study guide: Exam P-1
The joint probability density function of X and Y is f(x,y) = 8xy for 0 < y < x < 1.
Calculate the marginal density of X and find E[Y \mid X = x].
- A)
f_X(x) = 4x^3;E[Y|X=x] = x/3 - B)
f_X(x) = 4x^3;E[Y|X=x] = 2x/3 - C)
f_X(x) = 2x^2;E[Y|X=x] = x/2 - D)
f_X(x) = 4x^3;E[Y|X=x] = x/2 - E)
f_X(x) = 2x^3;E[Y|X=x] = 2x/3
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