Computing a two-independent-sample t test is appropriate when
A) different participants are assigned to each of two groups.
B) the population variance is unknown.
C) participants are observed one time in a given group.
D) all of these.

Question

Quizplus · Accepted Answer

A two-independent-sample t test is appropriate when different participants are assigned to each of two groups, and the participants are observed one time in a given group. Additionally, it is used when the population variance is unknown, making D the correct answer.

Computing a Two-Independent-Sample T Test Is Appropriate When