Question

The tree diagram represents an experiment consisting of two trials. P(D)=? Please help!!!

Answer 1

P(D) = 0.65

Explanation:

Follow the segments that lead to D.

First, it's 0.5 to A and then 0.6 to D.

Then, it's 0.5 to B and 0.7 to D.

P(D) = 0.5 * 0.6 + 0.5 * 0.7 = 0.3 + 0.35 = 0.65

P(D) = 0.65

Answer 2

0.65

Explanation:

.6 x .5 + .7 x .5 = 0.65