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Question 3 A continuous random variable X has the cdf as follow: -2x3 +9x3 -12x-19 ; 1sxs2 ; otherwise (i) Determine the pdf, f (x).

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Question 3 A continuous random variable X has the cdf as follow: -2x3 +9x3 -12x-19 ; 1sxs2 ; otherwise (i) Determine the pdf, f (x). (ii) Determine the mean and variance of X

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