Use the probability model above to determine the successful outcome’s contribution to the expected value of the return.

a.
–$630
b.
–$540
c.
$540
d.
$630

Hence, Option 'D' is correct.

Step-by-step explanation:

Since we have given that

Probability of successful outcome = 0.7

Probability of unsuccessful outcome = 0.3

Amount he get for successful outcome = $900

Amount he lost for unsuccessful outcome = -$1800

We need to find the expected value of return when there is successful outcome:

P(Success)× Amount for successful

Hence, Option 'D' is correct.

answer is x<

the anwser is d) 75°

step-by-step explanation: