作者wo0228 (天碎之牙)
看板Grad-ProbAsk
标题[商管] [统计]-机率问题
时间Mon Feb 15 21:19:51 2010
(1)let the r.v X have a uniform dis. in the union of intervals (0,a)
and (a+2,b) .let F be the cdf of X .assume that F(4)=0.2 and F(a+1)=0.25
find a and b
(2)f(x,y)=4xy 0<=x,y<=1
find the conditional density of X give the event X-Y=0 by using the
transformation U=X and V=Y-X
这题解答上是求出 P(V=v|U=0) 他题目上的条件机率是这意思吗!?
谢谢!!各位高手不厌其烦的替我解答!!
祝大家新年快乐!!
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1F：→ redwine:(1)a=5,b=22 (2) u,v反了吧? 02/15 22:19
2F：推 ayabf:咦 我算a＝6,b=23 02/15 22:51
3F：推 eternalism:我跟一楼一样 02/15 22:52
4F：→ redwine:我也想跟学妹跨年 02/15 23:09
5F：→ wo0228:可以说一下你们第一题如何求的吗!? 02/16 00:06
6F：推 ayabf:我好像搞错意思了0.0 02/16 00:37
7F：→ redwine:当国中几何~高先求出来 面积=机率 02/16 09:16
8F：→ wo0228:对不起~我还是卡住了~可以给我点算式吗!?谢谢! 02/16 13:43