作者AngeloLu (Angelo)
看板Grad-ProbAsk
标题[问题]95高第一运管统计一题
时间Sun Apr 5 17:22:27 2009
The time of travel from a person is apartment to
the bus station follow a uniform distribution over
the interval from 20 to 30 minut .
if he leaves home at 9:05 AM , what is the probability
that he will go to the station between 9:25 and 9:30 AM ?
What is the mean and variance of wating time ?
我算出来是 0.5 50/2 100/12 对吗? 还是错了?
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 219.91.65.39
1F：推 ll9935:对阿对阿 04/05 17:40