题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-90310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-90310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-90310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-33814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-33814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-10993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101244-37904.png)
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![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101243-90310.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101244-75258.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101244-73355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101245-33681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101245-64914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101245-60620.png)
核心考点
试题【甲、乙两位同学玩游戏,对于给定的实数,按下列方法操作一次产生一个新的实数:由甲、乙同时各抛一枚均匀的硬币,如果出现两个正面朝上或两个反面朝上,则把乘以2后再减去】;主要考察你对条件概率等知识点的理解。[详细]
举一反三
| “厨余垃圾”箱 | “可回收物”箱 | “其他垃圾”箱 |
厨余垃圾 | 400 | 100 | 100 |
可回收物 | 30 | 240 | 30 |
其他垃圾 | 20 | 20 | 60 |
(Ⅱ)试估计生活垃圾投放错误的概率;
(Ⅲ)假设厨余垃圾在“厨余垃圾”箱、“可回收物”箱、“其他垃圾”箱的投放量分别为
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101233-58634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101233-51829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101233-21203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101233-58634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101234-52412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101233-58634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101234-52412.png)
(注:
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101234-45421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101234-11997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101234-24437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101225-40042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101225-86113.png)
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![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101225-21622.png)
求(1)甲在
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101225-10654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101225-46133.png)
(2)甲、乙两人不在同一站点下车的概率
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101217-55092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101217-40684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101217-90136.png)
命中环数 | ![]() | ![]() | ![]() | ![]() |
概率 | ![]() | ![]() | ![]() | ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101217-55092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101217-40684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101204-16720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191027/20191027101204-94114.png)
(Ⅰ)求该产品不能销售的概率;
(Ⅱ)如果产品可以销售,则每件产品可获利40元;如果产品不能销售,则每件产品亏损80元(即获利-80元).已知一箱中有产品4件,记一箱产品获利X元,求X的分布列,并求出均值E(X).
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