RT 很欢乐。。。

这个是我本行的••••••随机过程@@

围观答案

简单
d)geometric dist.
e)Yes. Just by the definition of memoryless. ps, only two r.v.'s are memoryless, geometric and exponential.
f)P(X>s+t|X>s)=P(X>t)
g) sum of iid exponential is gamma dist.

(11-05-2010, 01:29 PM)maynerd 提到: 简单
d)geometric dist.
e)Yes. Just by the definition of memoryless. ps, only two r.v.'s are memoryless, geometric and exponential.
f)P(X>s+t|X>s)=P(X>t)
g) sum of iid exponential is gamma dist.

高人啊

经典概率，没有数学理论就可以解决。

我们都知道，概率就是伪科学～