Q1. Let Random variable X represent f times the number we throw a dice: 2 3 5 What we see on dice 1 X 4 f 2f 3f 4f P(X=x) 1/6 1/6 1/6 1/6 a) What if the expected value and variance of X? b) What is the expected value and variance of 3X? c) What is the expected value and variance of X+X+X? 5f 1/6 6 6f 1/6