A bag contains two discs with the number 2 on them and two discs with the number 3 on them. A disc is drawn at random from the bag and the number noted. The disc is returned to the bag. A second disc is then drawn from the bag and the number noted. a Write down the sample space. The discrete random variable X is the sum of the two numbers. b Write down the probability distribution for X. c Write down the probability function for X.

AppendixLO1