For a two-sample hypothesis which tests for differences in population parameters (1)and (2), a two-tailed test seeks evidence that population parameter:
A)seeks evidence that population parameter (2)is larger than parameter (1).
B) (2)is the same as parameter (1).
C) (2)is smaller than parameter (1).
D) (1)and (2)do not belong to the same data.

Question

Quizplus · Accepted Answer

A two-tailed test is used when it is necessary to investigate if there are any differences between two population parameters. It seeks evidence that both parameters are either larger or smaller than each other, rather than only one being larger or smaller. Therefore, the correct answer is B, as it seeks evidence that (1) and (2) are the same.

For a Two-Sample Hypothesis Which Tests for Differences in Population