I have a question while creating therotical distribution like binomial,passion or normal distribution we required parameters from where we are getting that in real scenario is it from sample we surveyed in past and if it is from sample then why we called them mu and sigma while solving normal distribution problems please clear my confusion.
@Rebaz O. Yahya thank you for sharing the paper I will give it a read.
@Nikhil Waghalkar I think this question you can start in another thread also clearly mention your question. But for now what I understood is that you want to ask how do we get true parameters in real scenario. Is it?