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?
A) one-sample t test
B) two-independent-sample t test
C) related-samples t test
D) there is not enough information to answer this question

Question

Quizplus · Accepted Answer

A related-samples t test, also known as a paired-sample t test, is appropriate when the difference scores between two groups are obtained from the same individuals (i.e., related-samples). This type of t test does not require knowledge of the population variance and is used to compare means between the two related groups.

A Researcher Conducts a Study in Which the Population Variance