作者edward0887 (傻眼猫咪)
看板Grad-ProbAsk
标题[理工] 机率一题 Poisson分布
时间Wed Dec 4 01:55:15 2019
SSI chips, essential to the running of a computer system, fail in
accordance with a Poisson distribution with the rate of one chip
in about five weeks. If there are two spare chips on hand, and if
a new supply will arrive in eight weeks, what is the probability
that during the next eight weeks the system will be down for a
week or more, owing to a lack of chips?
在网路上也看到这题 但好像没有正确的答案
不知道小弟这样解对不对
将两个chip当作独立事件讨论
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※ 编辑: edward0887 (42.72.147.18 台湾), 12/04/2019 01:55:50
https://i.imgur.com/fYSzeqn.jpg
※ 编辑: edward0887 (42.72.147.18 台湾), 12/04/2019 02:19:12
1F：→ Ricestone: 不对，你写的算式是两个独立的chip在一周里面各自都只 12/04 02:52
2F：→ Ricestone: 坏8次以内的机率 12/04 02:53
3F：→ Ricestone: 这题应该要算这种chip在七周里面发生三次以上坏掉的机 12/04 02:54
4F：→ Ricestone: 率 12/04 02:54
5F：→ edward0887: R大我懂了 非常谢谢您！！！ 12/04 03:20