What kinds of values of test statistic would lead to the rejection of the null hypothesis? in other words, what is the correct form of the rejection region (rr) ?

Critical Values and Rejection region

Step-by-step explanation:

Critical Values and Rejection region

In hypothesis testing, a critical value is a point on the test distribution that is compared to the test statistic to determine whether to reject the null hypothesis. If the absolute value of the test statistic is greater than the critical value, we fail to accept the null hypothesis and reject the null hypothesis.Critical values depend on the significance level.Thus, we may define the rejection region as the region for rejection of null hypothesis and define the region greater than the critical value for a right tailed test and smaller for a left tailed test.

Iam pretty sure its a sorry if im wrong

Graph a should be your answer