In testing the difference between the means of two normally distributed populations, if μ₁ = μ₂ = 50, n₁ = 9, and n₂ = 13, the degrees of freedom for the t statistic equals ________. A) 22 B) 21 C) 19 D) 20

Name: In testing the difference between the means of two normally distributed populations, if μ 1 = μ 2 = 50, n 1 = 9, and n 2 = 13, the degrees of freedom for the t statistic equals ________. A) 22 B) 21 C) 19 D) 20
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Quizplus · Accepted Answer

n₁ + n₂ − 2 = 9 + 13 − 2 = 20

In Testing the Difference Between the Means of Two Normally