题目:若随机变量X服从二项分布B(n, p),且E(X) = 3,D(X) = 2,则n和p的值分别为
2024-11-13
题目:若随机变量X服从二项分布B(n, p),且E(X) = 3,D(X) = 2,则n和p的值分别为
A. n = 3, p = 1/2 B. n = 6, p = 1/2 C. n = 9, p = 1/3 D. n = 12, p = 1/4
正确答案:B
试题解析:暂无
题目:若随机变量X服从二项分布B(n, p),且E(X) = 3,D(X) = 2,则n和p的值分别为
A. n = 3, p = 1/2 B. n = 6, p = 1/2 C. n = 9, p = 1/3 D. n = 12, p = 1/4
正确答案:B
试题解析:暂无