【单选题】If you have a toothache, you should ______. [ ]
【单选题】If you want to see a combination of Eastern and Western art, you can go to see______.
A.
Zhang Yongxu's exhibition of oil paintings.
B.
The Art show from Nanjing
D.
Gu Kaizhi's paintings on Jan.5.
【简答题】设连续型随机变量X的分布函数为 已知E(X)=1,则D(X)=________.
【单选题】If you want to see a combination of Eastern and Western art, you can go to see ______.
A.
Zhang Yongxu's exhibition of oil paintings
B.
The Art show from Nanjing
D.
Gu Kaizhi's paintings on Jan. 5th
【单选题】If you go to see a doctor, the doctor will have your temperature ____ at first.A.checkB.examine
A.
298. If you go to see a doctor, the doctor will have your temperature ____ at first. A.check
【简答题】已知随机变量X的分布函数为 请计算 ______, __________, __________, __________(请用分数表示,形如“b/a”)
【单选题】If you go to see a doctor, you should of your illness to a doctor.
【简答题】设随机变量X的分布函数为设随机变量X服从N(μ,σ2),试求P{|X一μ|<σ}的值.已知标准正态分布函数φ(x)设随机变量X服从N(μ,σ2),试求P{|X一μ|<σ}的值.已知标准正态分布函数φ(x)的值有φ(1)=0.841 3, φ(0.5)=0.691 5, φ(2)=0.977 2.
【单选题】If you want to see stuffed fish and birds, which floor should you go to?