作者Nocp (靠~运气不如靠努力)
看板Grad-ProbAsk
标题[商管] [统计] Chebyshev
时间Sat Feb 13 16:52:12 2010
Let X have Poisson distribution with u =100
Use Chebyshev to determine a lower bound for P(75 < X < 125)
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a lower bound 请问此处的 意思是 要尾点值?
还是要下界的机率?!
想不通
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1F：推 a10019036:应该是求下界机率...是0.84?? 02/13 17:03
2F：推 ayabf:因为chebyshev会写成P(｜X-100｜<=K*西葛鎷) >=1-1/k^2 02/13 17:11
3F：→ ayabf:所以你也只能求下界 02/13 17:11
4F：推 a10019036:我解法跟楼上一样 02/13 17:12
5F：→ NCUflywind:我传给你的档案有呀= = 02/13 17:55
6F：→ Nocp:尴尬~新年就发生鬼打墙... 02/13 18:25
7F：→ NCUflywind:晚点上线再传一次~你可能没注意到哈哈 02/13 20:04
8F：→ Nocp:感谢~那时候 也是这样解...指是不了解意思! 懂了...新年快乐! 02/13 22:18
9F：→ goshfju:Chebyshev's Inequality 就是用来找机率的界限 02/14 03:45