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 above

Question

Quizplus · Accepted Answer

When testing a hypothesis about the mean of a population of paired differences, we have dependent or correlated samples. In this case, we use the paired t-test, which compares the mean difference between pairs to 0 (the null hypothesis). Therefore, the correct test statistic to use is t. Options A, C, and D are not applicable in this scenario.

When Testing a Hypothesis About the Mean of a Population