Question

A researcher conducts a study in which the population variance of difference scores between two groups is unknown. What type of t-test is most appropriate for this study? Question 8 options: one–independent sample t-test two–independent sample t-test related samples t-test There is not enough information to answer this question.

Answer 1

Correct Answer: There is not enough information to answer this question.

Reason:

Nothing is known regarding what kind of test conditions the 2 groups are subjected to.

A One-Independent Sample T-Test compares a sample mean to a known population mean. Hence one-independent sample t-test is not possible as we have 2 samples.

A two-Independent Sample T-Test compares two sample means from different populations regarding the same variable, but here we don't know if the study is done on same/different variables. Hence two-Independent Sample T-Test is not possible.

Also a related samples t-test is used if we have two measurements on the same item, person or thing. But here, we don't know if we have two measurements performed on the same item. Hence related samples t-test is not possible.

Hence, there is not enough information to answer this question.