Under which of these circumstances is the assumption of equal population variance safe to assume in a two-sample hypothesis test?
A) when both samples are greater than n = 100
B) when both samples are approximately equal in size
C) when the difference in means between the two samples is statistically significant
D) when the ratio of the sample standard deviation is smaller than 2

Question

Quizplus · Accepted Answer

When both samples are approximately equal in size, the assumption of equal population variance is safe to assume in a two-sample hypothesis test.

Under Which of These Circumstances Is the Assumption of Equal