When we state the alternative hypothesis to look for a difference in a parameter in one direction,we are doing a _____.
A)one-sided test
B)two-sided test
C)None of the above

Question

Quizplus · Accepted Answer

A one-sided test is used to test a specific direction of the alternative hypothesis, such as looking for an increase or decrease in a parameter. A two-sided test is used when the alternative hypothesis is simply that there is a difference between the groups, without specifying a direction. Since the question specifically asks for a difference in one direction, a one-sided test is appropriate.

When We State the Alternative Hypothesis to Look for a Difference