(i) (ii) (iii) (iv) 7. What is the value of A so that the h(x) is a valid pdf of a random variable X? What is its CDF? What is its mean? What is the average of 3X? What is the average of 4X²? What is the average of -4X? What is the variance of -5X? exp(-x 6 ) U (x) 16 h(x) = Axexp

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