【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/D53AB64D17EB48717F7E88258CABE22C.png title=Unnamed QQ Screenshot20170106092146.png alt=Unnamed QQ Screenshot20170106092146.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/8113250E0F2FD0433FA093580DDA5E0E.png title=Unnamed QQ Screenshot20170106091559.png alt=Unnamed QQ Screenshot20170106091559.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/7BBDFC6401E8C30E1B45A41B079EE0AA.png title=Unnamed QQ Screenshot20170106093156.png alt=Unnamed QQ Screenshot20170106093156.png/>
【判断题】
设X~二项分布B(10,0.2),则X的数学期望EX=2.
【单选题】
设X~N(0,1),则X平方的数学期望为
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/E8A49C321411FF54CB54EDE7F0D4589B.png title=QQ截图20170105215056.png alt=QQ截图20170105215056.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/B8E519D255F410DEC0CBB04218E47B10.png title=QQ截图20170105215205.png alt=QQ截图20170105215205.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/34818CD139B9C2A89F700C4CB4ED8444.png title=QQ截图20170105215213.png alt=QQ截图20170105215213.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/CA00968537D2720B487C7DA5112B6CE6.png title=QQ截图20170105215221.png alt=QQ截图20170105215221.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/E5EDFF71C1A83E73D1ECFC332B560AC3.png title=QQ截图20170105215228.png alt=QQ截图20170105215228.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/C4AD6AA9862BB41C2128B5C65D32DA70.png title=QQ截图20170105215235.png alt=QQ截图20170105215235.png/>
【判断题】
若二维随机变量(X,Y)的分布函数F(x,y)和边缘分布函数FX(x),FY(y),对任意的x,y有F(x,y)=FX(x)Fy(y),则随机变量是相互独立的。
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/894A1E70C9CB257ED86E85DE6B4A73C3.png title=QQ截图20170105211247.png alt=QQ截图20170105211247.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/00709C2726C7B242A2722D0C74B938E7.png title=QQ截图20170105211255.png alt=QQ截图20170105211255.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/07A1CC2B4A8BEDC547ADF219C642A305.png title=QQ截图20170105211303.png alt=QQ截图20170105211303.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B56F99CEE1E3C3E5FFBC7EE1037D4758.png title=QQ截图20170105211311.png alt=QQ截图20170105211311.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/AB6B07A528B54E83DDEE98D0B1B3FF7B.png title=QQ截图20170105211319.png alt=QQ截图20170105211319.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/FC8B73C79F6EEDB836DF13999924638F.png title=QQ截图20170105211554.png alt=QQ截图20170105211554.png/>