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雷达卡
Smaple 1 类似 但是题目更难一些
有加入条件机率 基本上重点就是把图画出来(三个圈圈) 就解得出来
没用图解的话 可能不好解出 因为题目有些条件根本就用不到
Sample 5
Sample 7
Sample 9
Sample 12
Sample 19
Sample 28
A hospital receives 10% of its flu vaccine shipments from Company X and the remainder of its shipments from other companies
Each shipment contains a very large number of vaccine vials.For Company X’s shipments, f(x<30%) of the vials are ineffective. For every other company,
f(x<20%) of the vials are ineffective. X.Y all exponentially distribution θ=10
The hospital tests 30 randomly selected vials from a shipment and finds that one vial is ineffective.
What is the probability that this shipment came from Company X?
Sample 34
The lifetime of a machine part has a continuous distribution on the interval (0, 40)
with probability density function f, where f (x) is proportional to x/ (1 + x^2).^2.
Calculate the variance of t the lifetime of the machine.
Sample 50
Sample 77 78 79
Sample 95
Sample 100
Sample 103
Sample 151
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f(X.Y)=x(1+y)^2 0<x<5 1<y<10
问题
E[X]和E[Y]的关系 及 Var[X]和Var[y]关系 (大于 小于 或 等于)
#
Normally approximate
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Loss 范围
30% 3<x<5
20% 4<x<6
10% 6<x<8
问 4<x<5 加上 7<x<8 loss的大小
#
X outlives the y = x>y
知道这个题目就可以解了(只是英文看不懂)
#
X is possion distribution λ=3
在x至少要大于等于1的情况下
问var[x]
#
Profit
100 500 1000
Store1 0.9 0.02 0.08
Store2 0.05 0.3 0.65
Store3 0.5 0.4 0.1
X=profit
问standard deviation of x
#骰子 扑克牌 问题完全没考(可能是旧题型 现在都不考了)
我准备的方向是用guo的书
主要练习
1.sample
2.EXAM P QUESTIONS OF THE WEEK S. Broverman, 2007
3.SOA EXAM P TIA的 4套题目
Sample 大约看了三遍以上 完全了解
然后才开始做 其他的套题
其他套题都只写了一遍 把不懂的都弄懂 就去考试了
太难的题目基本上我自己就是直接跳过
当然要考到十级分的人不可以学我这样偷懒 哈
基本上还是sample一定要熟 要真的都懂
而做题目的量其实不用多 最主要是要完全了解
p.s.考试准备的资料 我免费上传给大家
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