When can we use the paired ttest A When we want the most pow

When can we use the paired t-test?

A. When we want the most powerful 2-sample test

B. When we have dependent samples

C. When we have similar variances and equal sample sizes

D. When we have equal sample sizes (we don’t need the variances to be the same)

E. Two of the above are correct

Solution

B. When we have dependent samples