随机变量ξ服从二项分布ξ~B(16,P),且Dξ=3,则Eξ等于( ) A.4 B. 发布时间:2017-05-02 18:51 │ 来源:www.tikuol.com 题型:选择题 问题: 随机变量ξ服从二项分布ξ~B(16,P),且Dξ=3,则Eξ等于( )A.4B.12C.4或12D.3
题型:选择题 What a table! I've never seen such a thing before. It is _________it is long. [ ]A. half not as wide as B. wide not as half as C. not half as wide as D. as wide as not half 查看答案