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?
0.008
0.128
0.488
0.512
0.640
周一下雨了!!!!
周一回家:周六不下雨x周日不下雨x周一下雨
周一回来,说明周六没下雨,周日没下雨,周一下雨了。
每天下雨的概率是0.2,不下是0.8
所以周一回来的概率就是周六不下雨的概率×周日不下雨的概率×周一下雨的概率=0.8*0.8*0.2=0.128
following Monday是下个周一回家,我理解成周一之后回家。也是很懵逼了,难过
题目看错,我看成了礼拜一之后回家,题意是礼拜一当天回家。0.8*0.8*0.2=0.128
我也是
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