One of the assumptions for the t test for independent means is that:
A)the sample means are not significantly different
B)the mean of the distribution of differences between means is 1
C)the variance of each of the two parent populations is the same
D)the means of each of the two parent populations vary by no more than 1 SD

Question

Quizplus · Accepted Answer

The t test for independent means assumes that the variance of each of the two parent populations is the same. This is known as the assumption of homogeneity of variance. If this assumption is violated, the t test may not be appropriate and alternative tests, such as the Welch's t test, may need to be used. The other choices are not assumptions of the t test for independent means.

One of the Assumptions for the T Test for Independent