Purpose of Hypothesis Testing• The purpose of hypothesis testing is to assistadministrators and clinicians in making decisions.• In practice, it is not uncommon for samples to besmall relative to the size of the population, or tohave samples that are highly skewed, and hence theassumption of normality is violated.– Most computer packages include an analytical procedure(For example, the Shapiro-Wilk or Anderson-Darlingtest) for testing normality. It is important that such testsare carried out prior to analysis of data.