A test statistic is calculated. The test statistic is compared to a critical value (found in a table). If the calculated test statistic is beyond the critical table value, the null hypothesis is rejected. If the test statistic is not beyond the critical value, the null hypothesis has not been rejected (i.e., failure to reject the null hypothesis)
Use: This type of testing using a test statistic is used in the f-test, the t-test, and the chi-square tests.
