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Question. Answer the questions in the attachments below. Please no guess work allowed. If a random variable X has a mean of 3 and standard

Question. Answer the questions in the attachments below. Please no guess work allowed.

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If a random variable X has a mean of 3 and standard deviation of 2, calculate: (i) E[2X -4] (ii) var[3X + 2] (iii) var[3 -4 X ] 3X +2 (iv) E 4\fA continuous random variable has the probability density function fy (x) = ke, for x> 0. Calculate k, and P(X

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