r*****t
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jiahe (JiaHe) 于 (Sat Apr 28 22:15:24 2007) 提到:
发信人: jiahe (JiaHe), 信区: Statistics
标 题: 问个概率题
发信站: BBS 未名空间站 (Sat Apr 28 22:15:05 2007)
不是什么家庭作业，呵呵
My telphone rings 12 times each week, the calls being randomly
distributed among the 7 days. What is the probability that I
get at least on call each day ?
answer provided is: .2285
my answer is .02488
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BulletTooth (DesertEagle.50) 于 (Sat Apr 28 22:17:28 2007) 提到 |
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