<p>X is a discrete random variable with possible outcomes X = {1
X is a discrete random variable with possible outcomes X = {1,2,3,4}. Three functions f(x), g(x), and h(x) are proposed to describe the probabilities of the outcomes in X.
The conditions for a probability function are satisfied by:
A.
f(x)
B.
g(x)
C.
h(x)
正确答案是B