Since critical values of t vary by sample size, before using the t table we must first calculate________.
A) the Z score.
B) degrees of freedom.
C) the population standard deviation.
D) the alpha level.

Question

Quizplus · Accepted Answer

Before using the t table, we must calculate the degrees of freedom, which depend on the sample size. Without calculating the degrees of freedom, we cannot accurately determine the critical values of t. The other options (A, C, D) are not necessary for determining critical values of t.

Since Critical Values of T Vary by Sample Size, Before