题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-14102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-19918.png)
(1)已知甲、乙两种产品每一道工序的加工结果为A级的概率如表一所示,分别求生产出的甲、乙产品为一等品的概率
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-15537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-51156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-33477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-55566.jpg)
(2)已知一件产品的利润如表二所示,用
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-33129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-33129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-92719.png)
(3)已知生产一件产品需用的工人数和资金额如表三所示。该工厂有工人
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065356-70551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-45516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-11959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-11959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-66827.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-29665.png)
(2)解:随机变量
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-47397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-85245.png)
![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-93374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-21542.png)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-70619.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-73270.png)
第二问随机变量
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-47397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-85245.png)
![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-93844.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-23895.png)
第三问解:由题设知
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-82453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-43046.png)
作出可行域(如图),作直线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-57479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-21648.png)
|
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-70619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-48928.png)
(2)解:随机变量
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-47397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065357-85245.png)
![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-93844.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-23895.png)
(3)解:由题设知
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-82453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-43046.png)
作出可行域(如图),作直线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-57479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-21648.png)
|
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065358-70619.png)
核心考点
试题【(本小题满分12分)某工厂生产甲、乙两种产品,每种产品都是经过第一道和第二道工序加工而成,两道工序的加工结果相互独立,每道工序的加工结果均有两个等级.对每种产品】;主要考察你对简单的线性规划等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065352-14777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065352-40521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065352-40521.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065348-42047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065349-67195.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065349-84676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065344-42453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065345-62027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065345-14336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065340-44536.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065340-10916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065340-44757.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065330-88606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065330-49306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065330-26266.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065330-55698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017065331-58018.png)
A.![]() | B.![]() | C.![]() | D.1 |
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