What is the purpose of the critical value?
A)To define the minimum absolute z-value required for a sample to be in the region of rejection.
B)To define the minimum absolute z-value required for a sample to be out of the region of rejection.
C)To determine the likelihood that the population mean was obtained by chance.
D)To determine the value of z needed to conclude that the population mean was obtained by chance.

Question

Quizplus · Accepted Answer

The critical value is used to define the minimum absolute z-value (or t-value, depending on the test) required for a sample to be considered statistically significant, i.e., in the region of rejection. This helps in deciding whether to reject the null hypothesis.

What Is the Purpose of the Critical Value