If the Homogeneity of Variance Assumption Is Violated in an Experiment

If the homogeneity of variance assumption is violated in an experiment using the t test for independent groups, this means _________.

A) the populations from which the samples were drawn have different variances
B) the power of the t test will be reduced
C) t the test can still be used, if the violation is a moderate one
D) the t test should not be used
E) the populations from which the samples were drawn have different variances and t the test can still be used, if the violation is a moderate one