In testing for the differences between the means of two independent populations where the variances in each population are unknown but assumed equal, the degrees of freedom are A) n - 1. B) n - 2. C) n₁+ n₂- 1. D) n₁+ n₂- 2.

Question

Quizplus · Accepted Answer

When assuming equal variances and conducting a two-sample t-test, the formula for the degrees of freedom is df = (n1 + n2 - 2), or in this case, df = (n₁+ n₂- 2). Therefore, the best choice is D.

In Testing for the Differences Between the Means of Two