为了求职冲呀 · 2020年03月09日
问题如下：
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:
选项：
A.f(x).
B.g(x).
C.h(x)
解释：
B is correct.
The function g(x) satisfies the conditions of a probability function. All of the values of g(x) are between 0 and 1, and the values of g(x) all sum to 1.
老师您好，看您的解答弄懂了问题，请问g（x）和h（x)分别代表什么呢？请问在那个章节可以去学习这两个知识点呢？
NO.PZ2017092702000090问题如下X is a screte ranm variable with possible outcomes X = {1,2,3,4}. Three functions f(x), g(x), anh (x) are proposeto scrithe probabilities of the outcomes in X. The contions for a probability function are satisfieby:A.f(x).B.g(x).C.h(x) B is correct.The function g(x) satisfies the contions of a probability function. All of the values of g(x) are between 0 an1, anthe values of g(x) all sum to 1.本题在于求三个函数中哪一个符合概率函数的定义。这就要满足两个条件:第一，所有的概率的范围在0~1之间，这样f(x)就不满足条件了；第二，每一列的四个概率加起来应该等于1，这样h(x)就不符合条件了。所以选B 谢谢。。。。。。。。
NO.PZ2017092702000090 如题
提问题目不太理解究竟想问什么？有点看不懂，所以也不知道怎么解答。谢谢老师赐教。
智商有限，题目看不懂，哭晕
