设随机变量X服从二项分布B（n，p），且E（X）=1.6，D（X）=1.28，则n=_1，p=_2．_刷题宝

题干

设随机变量X服从二项分布B（n，p），且E（X）=1.6，D（X）=1.28，则n=____，p=____．

上一题下一题 0.0难度选择题更新时间:2018-11-02 01:19:47

答案(点此获取答案解析）

8,0.2

同类题1

根据陈述的知识，类推得出的结论正确的是

同类题2

牛奶中含有乳球蛋白和酪蛋白等物质，在奶牛的乳腺细胞中，与上述物质的合成和分泌有密切关系的细胞器是（）

同类题3

Here some noodles for you. Happy birthday you.

同类题4

阅读理解。

Dear Mum,

Thanks for the new dress. It's so nice! It's hot in Wuhan. I wear the dress to school. I am very happy. Miss Li says I can go back home after Friday. I want to buy a pair of sunglasses.They'reninety-one yuan. Thet're too expensive.

Love,Mary

同类题5

I still remember the sitting-room _______ my mother and I used to sit in the evening．

小学学科试题库

初中学科试题库

高中学科试题库