In Testing the Difference Between the Means of Two Normally

question 16

Multiple Choice

In testing the difference between the means of two normally distributed populations,if μ₁ = μ₂ = 50,n₁ = 9,n₂ = 13,the degrees of freedom for the t statistic equals ___________.

• A)22
• B)21
• C)19
• D)20

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