Question
Find the probability distribution of white balls drawn when 3 balls are drawn one by one without replacement from a bag containing 4 white and 6 red balls.
Solution
Let X denote the random variable ‘number of white balls’. X can take the values 0, 1, 2, 3.
Let p be the probability of getting first white ball and q the probability of not getting first white ball.
∴ probability distribution is
