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[概率/统计] 公共汽车每15min一班,在车站停5min,等车时间不超过5min的概率

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hyperbola98 posted 2013-10-23 23:26 |Read mode
金太阳提供的答案是1/4
我的问题一是:停的5min钟应该在15min内?
问题二:在车上等车时间应为0?

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kuing posted 2013-10-23 23:51
这个问题得问公交车站长……

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realnumber posted 2013-10-24 07:50
也是早年的一个应用题,总觉得编题目的人不见得比解题目的人考虑更多,给考虑更全面的部分学生带来困扰,
往往也没约定哪些是可以忽略的,如本题背景,常坐公交车的,更觉很多不符合实际.
--建议,答案不应该固定,解答者可以补充或限制自己觉得合理的前提.---当然把问题过于简化,得分不能过高.

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