Statistical Methods

Unit 4 - Testing of hypotheses

4.1.Introduction
Many situations call for verification of statements on the basis of available information. For example, a researcher may be interested in verifying the statement 'Fish species A grows faster than fish species B' using the average growth of fish of species A group faster than fish B based on say information collected on 40 farms. Verifying a statement concern in a population by examine a sample from that population is called testing of hypothesis.

Estimation and testing of hypothesis are not as different as they appear. For example, confidence intervals may be used to arrive at the same conclusions that are reached by using the testing of hypothesis procedure.