Question 915539

The formula for this is the SUM of [P(X)*xi] = answer

In your problem this means the answer = (P0 * X0) +  (P1 + X1) + (P2 + X2).

Now replace the variables with the numbers to get the following:

 (0.24 * 0) + (0.31 * 1) + (2* 0.45) = 0.31 + 0.9 = 1.21 rounded to 1.2