When the samples we want to compare pair in some natural way,such as a pretest/posttest for each person or husband/wife pairs,a more appropriate form of analysis is to not construct a confidence interval treating them as two separate variables,but instead to construct a confidence interval to estimate the mean
A)difference.
B)sum.
C)ratio.
D)total.

Question

Quizplus · Accepted Answer

When comparing paired samples, such as in pretest/posttest scenarios or husband/wife pairs, the analysis focuses on the differences between each pair. This approach accounts for the natural pairing and potential correlation between the samples, making the mean difference the most relevant statistic to estimate.

When the Samples We Want to Compare Pair in Some