- A bag contains a large number of balls, each with one of the numbers 1,2 or 5 written on it in the ratio \(2 : 3 : 4\) respectively.
A random sample of 3 balls is taken from the bag.
The random variable \(B\) represents the range of the numbers written on the balls in the sample.
- Find \(\mathrm { P } ( B = 4 )\)
- Find the sampling distribution of \(B\).