Question

According to the tree diagram below what is the probability that someone buys a book that is paperback and fiction?

Answer 1

I think the answer is a

Answer 2

The correct option is C) 0.2925.

Explanation:

Consider the provided tree diagram.

In order to find the probability multiply the probabilities of each step, you have to reach the leaf.

So, in order to reach the "paperback and fiction" leaf, you have to take the "Buys paperback" branch i.e. probability 0.65, and then the "Buys fiction" branch i.e. probability 0.45.

Therefore, the probability for "paperback and fiction" is

`0.65\ * 0.45=0.2925`

Hence, the correct option is C) 0.2925.