The hypothesis testing deals with answering research questions about the unknown
parameters of the population or, in other words, confirming or denying some
conjectures or statements about the unknown parameters. In the chapter on estimation
(Chap. 7), we have shown point and interval estimation of unknown
parameters from random samples. The estimation procedures ensure that the random
samples provide us good estimates to represent the corresponding population
values called parameters, which are unknown. Once we obtain the estimate, the
next important phase is to confirm whether the estimate represents the population
value adequately.