题目内容:
A weighted average of the value of a random variable, where the probability function provides weights is known as
A.a probability function
B. a random variable
C.the expected value
D.random function
参考答案:
A weighted average of the value of a random variable, where the probability function provides weights is known as
A.a probability function
B. a random variable
C.the expected value
D.random function