As the operations manager for American Airlines you have decided to invest in 10 new jets for the company's fleet. There are three outcomes for this investment. What is the expected return on investment using the information below?

0.17

Explanation:

The computation of expected return in investment is shown below:-

Expected return in investment = (Expected return of outcome 1 × Probability of outcome 1) + (Expected return of outcome 2 × Probability of outcome 2) + (Expected return of outcome 3 × Probability of outcome 3)

= (0.15 × 0.50) + (0.25 × 0.30) + (0.10 × 0.20)

= 0.075 + 0.075 + 0.2

= 0.17

Therefore for computing the expected rate of return we simply applied the above formula.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :

answer may be d i think