Suppose that X has the pdf f(x) = Ae-Ar for a>0, and Y = X². What is the pdf of Y? □ a. f(y) = y¯¾e¯¹√ÿ □ b. f(y) = y e-√³ 4 0 C. f(y) = yey O d. f(y) = y sexy
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