题目
8.设总体X的概率密度为f(x)，X_(1),X_(2),...,X_(n)为来自X的样本，x_(1),x_(2),...,x_(n)为样本值，则样本的联合概率函数为A. f(x)B. f(x_(1))f(x_(2))... f(x_(n))C. f^n(x)D. f(x_(1))+f(x_(2))+...+f(x_(n))
8.设总体X的概率密度为f(x)，$X_{1},X_{2},\cdots,X_{n}$为来自X的样本，$x_{1},x_{2},\cdots,x_{n}$为样本值，则样本的联合概率函数为
A. $f(x)$
B. $f(x_{1})f(x_{2})\cdots f(x_{n})$
C. $f^{n}(x)$
D. $f(x_{1})+f(x_{2})+\cdots+f(x_{n})$
题目解答
答案
B. $f(x_{1})f(x_{2})\cdots f(x_{n})$