What is the critical value for a two-tailed t test when α = 0.02 and n = 19?
A) 2.878
B) 2.567
C) 2.552
D) 2.110

Question

Quizplus · Accepted Answer

To find the critical value for a two-tailed t test, we need to look at the t-distribution table with degrees of freedom (df) equal to n - 1. For α = 0.02 and n = 19, we have df = 18. From the table, the critical value for a two-tailed test at 0.02 level of significance and 18 degrees of freedom is 2.552. Therefore, the answer is C) 2.552.

What Is the Critical Value for a Two-Tailed T Test