作者et220870 (维尼)
看板b95902HW
标题Re: [作业] about机率...
时间Mon Mar 19 18:07:36 2007
※ 引述《joehuang92 (乔乔)》之铭言：
: ※ 引述《et220870 (维尼)》之铭言：
: : ㄜ...不知道大一有谁有买书啊....^^"
: : 不晓得方不方便麻烦把这次作业的题目po一下....> <"....
: : by正在努力搜寻二手书中的人....
: p34.
:
: 8.Let A1, A2......An be n events. Show that if
: P(A1)=P(A2)=......=P(An)=1
: then P(A1A2A3...An)=1.
ㄜ...A1A2A3...AN是A1^^A2^^A3....^^An的意思吗？
: 9.(a)Prove that ∩[n=1~∞](1/2-1/2n,1/2+1/2n)={1/2}.
: (b)Using part(a), show that the probability of selecting 1/2 in a random se-
: lection of a point from (0,1) is 0.
: 10.A point is selected at random from the interval(0,1). What is the probabil-
: ity that it is rational? What is the probability that it is irrational?
:
: 就不翻译罗？剩下两小题书上没有，反正老师有说明过了。
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.112.240.162
1F：推 yease:联集 03/19 20:21
2F：推 annunaki:正常记号下，那是交集...... 03/19 20:37
3F：推 yease:对 ... 说错了 感谢指正^^ 03/19 20:41
4F：推 et220870:多谢~~^^ 03/20 02:03