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Chapter 12: Hypothesis Tests – Large Samples
Figure 12-1:
Diagram depicting the Critical (rejection) and
Noncritical (do not reject) regions
When dealing with hypothesis testing, we will encounter two broad
classifications of tests. These two broad classifications of hypothesis tests
are (a) one-tailed test, and (b) two-tailed test.
Definition: One-Tail Test
A one-tail test points out that the null hypothesis should be rejected when the
test statistic value falls in the critical region.
In this case, the single critical region will be in the right tail or in the left tail
of the distribution.




