Question: problem 3; Problem 3: Two components have the following pdf for their useful lifetimes X and Y: xe'x(1+3'3x > 0 and y > 0 x,

problem 3;

Problem 3: Two components have the following pdf for their useful lifetimes X and Y: xe'x(1+3'3x > 0 and y > 0 x, = _ H y) l 0 otherwwe a. What is the probability that the lifetime of X of the first component exceeds 3? b. What are the marginal pdfs of X and Y? c. Are X and Y independent

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