关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 公告:维护QQ群:833371870,欢迎加入!公告:维护QQ群:833371870,欢迎加入!公告:维护QQ群:833371870,欢迎加入! 2022-06-07 设X~b(2,0.1),Y~b(3,0.2),且X与Y独立,则X+Y服从b(5,0.3). 设X~b(2,0.1),Y~b(3,0.2),且X与Y独立,则X+Y服从b(5,0.3). 答案: 查看 举一反三 设随机变量X~B(4, 0.2),Y ~B(2, 0.2),且X与Y相互独立,则X+Y服从_______ 若X~P(0.2),Y~P(0.3),且X与Y相互独立,则X+Y~ 若X~B(3,0.2),Y~B(5,0.2),且X与Y相互独立,则X+Y~B(8,0.2). ( ) 若X~B(3,0.2),Y~B(5,0.2),且X与Y相互独立,则X+Y~B(8,0.4). 若X~N(3,0.2),Y~N(2,0.3),且X与Y相互独立,则X+Y~