In comparing two population means of interval data, we must decide whether the samples are independent (in which case the parameter of interest is ) or matched pairs (in which case the parameter is ) in order to select the correct test statistic.

Question

In comparing two population means of interval data, we must decide whether the samples are independent (in which case the parameter of interest is  ) or matched pairs (in which case the parameter is  ) in order to select the correct test statistic.

Quizplus · Accepted Answer

This is true as the choice of test statistic (either the two-sample t-test or the paired t-test) depends on whether the samples are independent or not.

In Comparing Two Population Means of Interval Data, We Must