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 statement is true. The choice between an independent samples or matched pairs test depends on whether the two samples are independent or not. The appropriate test statistics for each situation are the t-test for independent samples and the paired t-test, respectively.

In Comparing Two Population Means of Interval Data, We Must