Assuming unequal variances in a t-test for a zero difference of two means, we would:
A)sum the degrees of freedom for each sample.
B)use the larger degrees of freedom for simplicity.
C)use a complicated formula for the degrees of freedom.
D)use a z-test to be conservative in the calculation.

Question

Quizplus · Accepted Answer

The correct approach when assuming unequal variances in a t-test for a zero difference of two means is to use a more complicated formula for calculating the degrees of freedom, often referred to as the Welch-Satterthwaite equation. This formula provides a more accurate estimation of the degrees of freedom for the t-test under the assumption of unequal variances.

Assuming Unequal Variances in a T-Test for a Zero Difference