First subtract 3 from 51 which gives you 48, then divide 48 by 3 which gives you the answer of 16.
Answer:
The expected loss is $275 million.
Step-by-step explanation:
Expected loss can be determined as the sum of the product of each possible loss by the its probability of occurence. In this situation, there are only two possible losses listed since the probability of no loss doesn't add any value to the expected loss and should be disregarded.
Expected loss (in millions) = EL

The expected loss is $275 million.
Mean = total score : frequency
mean x frequency = total score
so
83 = total score : 6
83 × 6 = total score
498 = total score
so the sum of the 6 test scores is 498