Hi,

Just a quick question...

Suppose we have iid variables with a joint pdf (product of the pdf...), unknown parameter

We can write it in exponential form, and it's supposed regular.

Then, we've been told that an estimator for would be such that

My question is : is is an unbiased estimator ?

Another question... Why does and the fact that is twice differentiable wrt , for all x, imply that the likelihood is considered regular ?

Are my notations correct ?

Thanks in advance,