The pooled two-sample t procedure is based how many degrees of freedom? (Note: n₁ and n₂are the sample sizes of each group. ) A)n₁ + n₂ + 2 B)n₁ + n₂ - 2 C)n₁ + n₂_- 1 D)n₁ + n₂

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Quizplus · Accepted Answer

The pooled two-sample t procedure is based on the degrees of freedom, which is calculated by (n1-1) + (n2-1), where n1 and n2 are the sample sizes of the two groups being compared. However, since the samples are pooled and assumed to have equal variances, there is an adjustment factor of 2, resulting in the formula (n1-1) + (n2-1) - 2. Therefore, the correct choice is B.

The Pooled Two-Sample T Procedure Is Based How Many Degrees