Many computer programs provide two sets of results for the t test for independent means. The standard method assumes that the population variances are __________ ; an alternative procedure takes into account that the population variances may be __________.
A)negatively skewed; positively skewed
B)skewed; normally distributed
C)equal; unequal
D)divisible by one another; highly skewed

Question

Quizplus · Accepted Answer

The standard t test assumes that population variances are equal. However, in some cases, this assumption may not hold true and the population variances may be unequal. In these situations, an alternative t test that takes into account unequal variances should be used to ensure accurate results. Therefore, the best choice is C - equal and unequal - as it highlights the difference between the two methods.

Many Computer Programs Provide Two Sets of Results for the T