作者vivian1003 (vivian1003)
看板Statistics
标题[请益] 请问一个统计题目
时间Fri May 5 00:39:43 2006
※ [本文转录自 NTUstat 看板]
作者: vivian1003 (vivian1003) 看板: NTUstat
标题: [请益] 请问一个统计题目
时间: Fri May 5 00:25:47 2006
A company takes out an insurance policy to cover accidents that occur at its
manufacturing plant. The probability that one or more accidents will occur during
any given month is 3/5. The number of accidents that occur in any given month
is independent of the number of accidents that occur in all other months.
Calculate the probability that there will be at least four months in which no accidents
occur before the fourth month in which at least one accident occurs.
(A) 0.01
(B) 0.12
(C) 0.23
(D) 0.29
(E) 0.41
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1F：推 allenpn:应该英文看懂 这题就可以解了 05/05 01:45
2F：推 vivian1003:那可以请问一下英文的意思吗? 05/05 09:30