Question please solve 3.4(8,12,13) in details as soon as posible. please solve 3.4(8,12,13) in details as soon as posible. Image transcription textCos(O). 3.4-87 A random variable X can have values – 4, -1, 2, 3, and 4, each with probability 5. Find: (a) thedensity function, (b) the mean, and (c) the variance of the random Y= 3X’. 3.4-9. A gaussian random variable,for which fx (x) = (2/ Jm ) exp(-4x? ) is applied to a square-law device to produce a new (output) r… Show more… Show more Math Statistics and Probability Share QuestionEmailCopy link Comments (0)