Which of the following could least likely be a probability function? A. X:(1,2,3,4) p(x) = (x × x) / 30. B. X:(1,2,3,4) p(x) = 0.2. C. X:(1,2,3,4) p(x) = x / 10.
In a probability function, the sum of the probabilities for all of the outcomes must equal one. Only one of the probability functions in these answers fails to sum to one.
