Question 615496
For each probability distribution, add up all the probabilities. If you get 1 as a result, then it's a true probability distribution. If you don't get 1, then it's not a probability distribution.


Ex:

In choice A), add up the probabilities 3.8, 1/2, 7/24, and 1/3 to get 3.8+1/2+7/24+1/3 = 4.925


which is NOT 1, so choice A is NOT a probability distribution


Do the same for the other answer choices.