(Solved):
Let X be a discrete random variable with probability density function fX given by: and fX(a) ...
Let X be a discrete random variable with probability density function fX? given by: and fX?(a)=0 for all other a. (a) Let the random variable Y be defined by Y=X2, i.e. if X=2, then Y=4. Calculate the probability density function of Y. (b) Calculate the values of the cumulative distribution function of X and Y in a=1, a=3/4, and a=??1.