已知两个随机变量
,其中
,若
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0010cb466163db1349fc1040f6b439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ecc468ba1dd58f41f812b85437ff1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5458a90c448365b4e67d3e75a4b7e26d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe820d9cdf5fdae029bc914ea87c4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3104fce9d602aa455d5df4bcb94f515.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高二下·江苏·阶段练习 查看更多[2]
更新时间:2022-12-04 07:55:43
|
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】若随机变量
,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa091ed2b4d4c50f308c208e5bcbfbff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5f57e66d68c5f842aad2d27d8684a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff24209e257142dcf346fefc2113fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】若
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9607b72ae51053b6e5ac9d96ca72108c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be77a596df360562ef35457699de29d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5408021476c7d32dec40bed198de75ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐2】已知随机变量
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d572b77569507a6953f2d80a810b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81976f5a419b11882d36eb5fc74107a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ba7819bb5cd74ffe35d7141d12e42f.png)
A.0.24 | B.0.26 | C.0.68 | D.0.76 |
您最近一年使用:0次