| 查看: 400 | 回复: 0 | ||
[求助]
有关概率的几个计算
|
|
求计算： calculate the followings: 1. out of those who are convicted, the proporion of those who truly commit crimes is 90%. its is also known that the proportion of those go free even though they truly commit crimes is 10% and the proportion of those who has the verdict of innoience when they are really innocent is 80%, what is the condinent probalility that he/she is really guilty? 2.a city with a big polulation has 20% ill people. pick up 2 at local dishicts A and B incide the city with inhabitants 100 and 10000 respectively. compare the probability of all the inhabitants of A and B are healthy? using this comparison, do you think there is a particular reason why A is performing beHer than B in terms of people's health issue? 3. there are two bares A and B both of which are known to have 100 balls with unknown preportions of white and red balls. from A we you pick up 3 balls in which 2 balls are red. you do the same experiment for B with the result of 1 red ball. form this, can you inform that the proportion of red balls in both boxes are the same or can you inform differently? |
回复此楼» 猜你喜欢
317求调剂
已经有18人回复
-
293求调剂
已经有5人回复
-
280分求调剂 一志愿085802
已经有7人回复
-
0854电子信息求调剂
已经有3人回复
-
263求调剂
已经有4人回复
-
石河子大学（211、双一流）硕博研究生长期招生公告
已经有3人回复
-
一志愿西安交通大学材料工程专业 282分求调剂
已经有13人回复
-
北科281学硕材料求调剂
已经有6人回复
-
328求调剂，英语六级551，有科研经历
已经有10人回复
-
298求调剂
已经有6人回复
找到一些相关的精华帖子，希望有用哦~
概率统计专业除了当老师，其他就业方向都有什么呢
已经有26人回复
- 贝叶斯公式求概率 疑问
已经有3人回复
- matlab在概率统计中的计算
已经有76人回复
- 推荐一本概率统计的经典著作
已经有52人回复
- 有虫友知道哪些sci杂志能刊发基础数学代数学方向的文章的投稿，
已经有4人回复
- 跪求概率论达人问题有关version的问题！！！
已经有4人回复
- 请教一个概率计算问题（重新整理后）
已经有10人回复
- 独立重复事件重复x次的概率算法
已经有5人回复
- 求教：概率和统计的一些基础知识。
已经有21人回复
- 关于贝叶斯网络中条件概率的计算
已经有1人回复
- 【求助】概率论与数理统计专业就业情况如何？
已经有12人回复
- 【求助】问几个关于量子力学的基本问题
已经有11人回复
- 【求助】关于一组数据的概率分布函数
已经有8人回复
- 【求助】关于概率累计曲线
已经有6人回复
- 【讨论】大家讨论一下概率和统计的经典教材吧！
已经有24人回复
点击这里搜索更多相关资源科研从小木虫开始，人人为我，我为人人
