Incomplete question. However, this are the options to select from
I. test statistic
II. p-value
III. critical value
IV. null hypothesis
Answer:
IV
Step-by-step explanation:
Remember, the region of rejection in statistical analysis simply implies what is that numerical range to which the observed results if different from assumed results would lead to the hypothesis should be discarded.
This hypothesis is called the Null hypothesis, it forms the rejection region of any statistical analysis.