When testing a hypothesis about the mean of a population of paired differences in which two different observations are taken on the same units, the correct test statistic to use is ________.
A) z
B) t
C) F
D) chi-square
E) None of the other choices is correct.

Question

Quizplus · Accepted Answer

This is because we estimate the population standard deviation with the pooled sample variances.

When Testing a Hypothesis About the Mean of a Population