In Testing the Difference Between the Means of Two Normally

question 14

Multiple Choice

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