Q4 2 Points Consider a random variable X taking values in 1,2,3,4, having a probability mass function of P(X = x) = x/10 for a c {1, 2, 3, 4} and 0 otherwise. Q4.1 1 Point What is the mean of X, i.e. E[X]? Enter your answer here Save Answer Q4.2 1 Point What is the variance of X, i.e. Var[X]? Enter your answer here Save