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 based on the ____ distribution.
A)z
B)t
C)F
D)chi-square
E)exponential

Question

Quizplus · Accepted Answer

When testing the hypothesis about the mean of a population of paired differences, the correct test statistic to use is based on the t-distribution as the population standard deviation is usually unknown. The t-distribution is used when sample size is small and when the population standard deviation is unknown. Hence, Option B (t) is the best choice.

When Testing a Hypothesis About the Mean of a Population