This worksheet shows you how the classical method and P-value method of two-tail hypothesis testing work. Set the level of significance α and the magnitude of the test statistic. The critical values are computed for α and the critical region is shown shaded in orange. The P-value is computed for the test statistic and is shown by the green shaded area. You can see whether the test statistic falls in the critical region or the noncritical region. The decision whether to reject or not reject the null hypothesis is shown based on the results of the test.
