Let ( X u ...,Xn) be a random sample of size n from the normal distribution with mean 0, variance a 2. Find the sufficient statistics for a 2. Let ( X u ...,Xn) be a random sample of size n from the...

Let ( X u ...,Xn) be a random sample of size n from the normal distribution with mean 0, variance a 2. Find the sufficient statistics for a 2.

Let ( X u ...,Xn) be a random sample of size n from the geometric

distribution with pdf