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

question 16

Multiple Choice

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.

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