The most extreme portion of a distribution of statistical values for the null hypothesis determined by the alpha level is called ______.
A) the outlier
B) the extremes
C) the statistical cutoff
D) the critical region

Question

Quizplus · Accepted Answer

The most extreme portion of a distribution of statistical values for the null hypothesis determined by the alpha level is called the critical region. It is also sometimes referred to as the rejection region. This region is determined by the alpha level (usually set at 0.05 or 0.01) and includes the values of the test statistic that are unlikely to occur by chance if the null hypothesis is true. When the calculated test statistic falls within the critical region, the null hypothesis is rejected in favor of the alternative hypothesis. Therefore, option D - the critical region is the best choice.

The Most Extreme Portion of a Distribution of Statistical Values