Chapter 12.3, Problem 25HP

To determine

To draw: - A sample tree diagram. Branches of tree diagram represent conditional probability,

Explanation of Solution

Given information :

Tree diagram of conditional probability.

Tree diagram is a way to understand probability in easy way.

  

Example :

Let $3$ red be $2$ blue marble balls chance of getting a blue ball is $\frac{2}{5}$ whereas chance of getting a red ball is $\frac{3}{5}.$

Probability of getting $2$ blue balls = $\frac{2}{5}\cdot \frac{1}{4}=\frac{1}{10}$