北语网院19春《概率论与数理统计》作业_1234

19春《概率论与数理统计》作业_1

1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/517.jpg"/>
     A.(A)    B.(B)
     C.(C)    D.(D)
2.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/521.jpg"/>
     A.(A)
    B.(B)
     C.(C)
     D.(D)
3.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/519.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
4.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/479.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/508.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/537.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/504.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/505.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/490.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
10.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/536.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
11.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/528.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/491.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
13.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/476.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
14.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2018/0412/1523495980966078583.png" title="1523495980966078583.png" alt="0.png"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
15.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/515.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
16.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/507.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
17.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/484.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
18.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/495.jpg"/>
     A.(A)
     B.(B)
     C.(C)    
    D.(D)
19.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/500.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
20.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/477.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
21.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494889676059083961.png" title="1494889676059083961.png" alt="图片.png"/>
     A.对
    B.错
22.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494894150341053569.png" title="1494894150341053569.png" alt="图片.png"/>
     A.对
    B.错
23.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494926882706045546.png" title="1494926882706045546.png" alt="图片.png"/>
     A.对
    B.错
24.[判断题]设随机变量X服从指数分布，则随机变量Y＝min（X，2）的分布函数恰好有一个间断点（）
    A.对
    B.错
25.[判断题]若X服从参数为λ的泊松分布，则EX=DX
     A.对
    B.错
19春《概率论与数理统计》作业_2
1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/516.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
2.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/533.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
3.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/518.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
4.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/475.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/499.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2018/0412/1523496470435074407.png" title="1523496470435074407.png" alt="5.png"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/494.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/520.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/535.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
10.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/502.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
11.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/506.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2018/0412/1523497714705072150.png" title="1523497714705072150.png" alt="5.png"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
13.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/551.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
14.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/523.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
15.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/547.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
16.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/509.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
17.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/522.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
18.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/530.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
19.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/473.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
20.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/544.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
21.[判断题]设随机变量X和Y独立同分布，记U=X-Y,V=X+Y,则随机变量U与V的相关系数也不为零。
    A.对
    B.错
22.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494898793892040595.png" title="1494898793892040595.png" alt="图片.png"/>
     A.对
    B.错
23.[判断题]若X服从二项分布b(n,p),则EX=npq                         (    )
     A.对
    B.错
24.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494889093059059843.png" title="1494889093059059843.png" alt="图片.png"/>
     A.对
    B.错
25.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494926728119053403.png" title="1494926728119053403.png" alt="图片.png"/>
     A.对
    B.错
19春《概率论与数理统计》作业_3
1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/518.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
2.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/526.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
3.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/519.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
4.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/554.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/531.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/568.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/566.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/528.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/577.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
10.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/513.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
11.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/521.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/538.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
13.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/549.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
14.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/558.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
15.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/524.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
16.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/593.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
17.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/516.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
18.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/512.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
19.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/533.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
20.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/583.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
21.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494893969538095066.png" title="1494893969538095066.png" alt="图片.png"/>
     A.对
    B.错
22.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494947850319001988.png" title="1494947850319001988.png" alt="图片.png"/>
     A.对
    B.错
23.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494894072633064041.png" title="1494894072633064041.png" alt="图片.png"/>
     A.对
    B.错
24.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494895337481056182.png" title="1494895337481056182.png" alt="图片.png"/>
     A.对
    B.错
25.[判断题]若X服从二项分布b(n,p),则EX=npq                         (    )
     A.对
    B.错
19春《概率论与数理统计》作业_4
1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/591.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
2.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/520.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
3.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/579.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
4.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/582.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/522.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/530.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/527.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/578.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/515.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
10.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/565.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
11.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/547.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/523.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
13.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/539.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
14.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/567.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
15.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/561.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
16.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/525.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
17.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/541.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
18.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/535.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
19.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2018/0412/1523496875796072846.png" title="1523496875796072846.png" alt="5.png"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
20.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/548.jpg"/>
     A.(A)
     B.(B)
     C.(C)
     D.(D)
21.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494894072633064041.png" title="1494894072633064041.png" alt="图片.png"/>
     A.对
    B.错
22.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494894034342052199.png" title="1494894034342052199.png" alt="图片.png"/>
     A.对
    B.错
23.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494947803660044452.png" title="1494947803660044452.png" alt="图片.png"/>
     A.对
    B.错
24.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0517/1494957047335082210.png" title="1494957047335082210.png" alt="图片.png"/>
     A.对
    B.错
25.[判断题]<img src="http://otsstatic.chinaedu.net/ots/blcu/images/2017/0516/1494923761436031121.png" title="1494923761436031121.png" alt="图片.png"/>
     A.对
    B.错