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

Question

Quizplus · Accepted Answer

The critical value for a two-tailed t-test with $\alpha = 0.02$ and $n = 19$ (which means degrees of freedom $df = n - 1 = 18$) can be found using a t-distribution table or calculator. For a two-tailed test with $\alpha = 0.02$, the significance level for each tail is $\alpha/2 = 0.01$. Looking up the critical value for $df = 18$ and $\alpha/2 = 0.01$ in a t-distribution table gives a value close to 2.552.

What is the critical value for a two-tailed t test when α=0.02 and n=19 ? \text { What is the critical value for a two-tailed } t \text { test when } \alpha = 0.02 \text { and } n = 19 \text { ? } What is the critical value for a two-tailed t test when α=0.02 and n=19 ?

$\text { What is the critical value for a two-tailed } t \text { test when } \alpha = 0.02 \text { and } n = 19 \text { ? }$