作者shokanshorin (上官蔷凛)
看板NTU-Exam
标题[试题] 99下 王振男 微积分乙下 第六次小考
时间Tue Jun 21 14:36:24 2011
课程名称︰微积分乙下
课程性质︰必修
课程教师︰王振男
开课学院：医学院
开课系所︰医学系
考试日期（年月日）︰2011／06／14
考试时限（分钟）：20min
是否需发放奖励金：是
（如未明确表示，则不予发放）
1. Suppose that the distribution function F(x) is given by
╭ 0 , x＜0
│ x/4 , 0≦x＜1
F(x)＝│ (x－1)/4＋1/2 , 1≦x＜2
│ 11/12 , 2≦x＜3
╰ 1 , 3≦x
(a) Find P(X＝k),k＝1,2,3 ; (b) Find P(1/2＜X＜3/2) (10%)
2. For a certain vaccine, 1 in 500 individuals experience some side effects.
Find the probability that in a group of 200 people at least one person
experiences side effects.
(a) use binomial distribution ; (b) use Poisson approximation.
(You only need to write down formulas.) (10%)
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1F：推 ALegmontnick:done 06/21 17:26
2F：推 liltwnboiz :给人家一点机会好不 06/21 18:48