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On Saturday morning, Malachi will begin a camping vacation and he will return home at the end of the first day on which it rains. If on the first three days of the vacation the probability of rain on each day is 0.2, what is the probability that Malachi will return home at the end of the day on the following Monday?
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分析B选项
分析C选项
分析D选项
分析E选项
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265456u
傻逼吧？！这个题目说的不是如果第一天下雨他就回家，而是说Malachi会开始一个露营而且他会在下雨的第一天回家，这不就说明第一天就下雨了吗？这并不是假设的预期啊？那么第一天下雨不就是个确定的probability为1的时间吗？！！！
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2022-01-30 15:00:18
195218kkfv回复265456u
你题目理解错了吧，the first day on which it rains是说第一个下雨的那天，不是说露营的第一天，如果一直不下雨他就一直不回家
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2022-03-03 15:20:52
pangey
第一天否第二天否第三天是 0.8*0.8*0.2
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2019-01-04 16:23:04
锅里动
0.8×0.8×0.2？
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2018-04-07 15:58:09
默默回复锅里动
头三天，周六，周日，周一
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2018-05-13 08:15:13
默默回复锅里动
相互独立事件
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2018-05-13 10:52:25
默默回复锅里动
相乘
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2018-05-13 10:52:33
pig0524
这不是选b么？
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2016-11-02 21:04:18
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