One of the assumptions for the t test for independent means is that
A)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 parent populations is the same.
D)the mean of each of the parent populations vary by no more than 1 standard deviation.

Question

Quizplus · Accepted Answer

The assumption for the t test for independent means is that the variances of each of the parent populations are the same. This is important because the t test assumes that the variances of the two groups being compared are equal, otherwise the results of the test may not be accurate.

One of the Assumptions for the T Test for Independent