For a given value of alpha, the critical value of t is _______ than the critical value of z .
A) no different
B) less
C) greater
D) none of these

Question

Quizplus · Accepted Answer

The critical value of t is greater than the critical value of z because the t-distribution has fatter tails than the z-distribution, meaning it has more variability and uncertainty in the data. Therefore, to account for this greater variability in the data, the critical value of t needs to be higher than the critical value of z to achieve the same level of significance.

For a Given Value of Alpha, the Critical Value of T