function given by Suppose that X and Y have a joint probability density if x, y ≥ 0 otherwise fx,y (x, y) = 7e-x-7y

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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function given by
Suppose that X and Y have a joint probability density
[7e-x-
fx,y (x, y) =
if x, y ≥ 0
otherwise
(c) Find the conditional probability density function fy|x=x·
(d) Are the random variables X and Y independent? Justify your answer.
(e) Let another probabilty density fx,y be given by
Sce=(√a+√y)² +2√ªy
fx,y (x, y) =
2
if x ≥ y ≥ 0
otherwise
Determine the normalization constant c in this case. Are X and Y statistically
independent? Justify your answer.
Transcribed Image Text:function given by Suppose that X and Y have a joint probability density [7e-x- fx,y (x, y) = if x, y ≥ 0 otherwise (c) Find the conditional probability density function fy|x=x· (d) Are the random variables X and Y independent? Justify your answer. (e) Let another probabilty density fx,y be given by Sce=(√a+√y)² +2√ªy fx,y (x, y) = 2 if x ≥ y ≥ 0 otherwise Determine the normalization constant c in this case. Are X and Y statistically independent? Justify your answer.
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