A discrete random variable X has probability distribution x 0 1 2 3 1 1 P(X = x) x 2 Find a P(1 < x < 3), b P(X < 2). 3 A discrete random variable X has a probability distribution 1 2 3 4 5 6 * P(X = x) 0.1 0.1 0.15 0.25 0.3 0.1 a Draw up a table to show the cumulative distribution function F(x). b Write down F(5). c Write down F(2.2).

AppendixLO1