Although there are many ways a researcher could investigate a hypothesis, in medical research, by far the most common is through the use of some form of statistical hypothesis testing the hypothesis may be conveniently considered as a tentative or working assumption, but it is an essential tool to achieve dependable knowledge. It not only explains the relationship between the different variables under study but provides the basis for reporting the conclusions of the study also. Therefore, the researchers must take all the precautions in framing right hypothesis in a right way