Answer:
Hypothesis testing
Explanation:
Hypothesis testing is the theory, methods, and practice of testing a hypothesis by comparing it with the null hypothesis. The null hypothesis is only rejected if its probability falls below a predetermined significance level, in which case the hypothesis being tested is said to have that level of significance.
The null hypothesis is Hâ‚€ while the alternative hypothesis [tex]H_{a}[/tex], when the null hypothesis is rejected, the alternative hypothesis hypothesis is employed.