题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085944-27462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085944-47789.png)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085944-47789.png)
核心考点
试题【 设随机变量X等可能地取1,2,3,…,n,若,则= .】;主要考察你对离散型随机变量及其分布列等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085941-15715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085941-40605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085941-94016.png)
A. n="4" p=0.9 | B.n="9" p="0.4" | C.n="18" p=0.2 | D.N="36" p=0.1 |
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085930-53031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085930-75618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085930-79538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085931-42356.png)
A.3 | B.4 | C.10 | D.9 |
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085925-34679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085925-99533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027085925-82495.png)
A. n="4" p=0.9 | B.n="9" p="0.4" | C.n="18" p=0.2 | D.N="36" p=0.1 |
A.3 | B.4 | C.10 | D.9 |