If Testing for the Difference Between the Means of Two

question 71

Multiple Choice

If testing for the difference between the means of two related populations,with samples of sizes n₁ = n₂ = n,where the variance of the differences is unknown,what is the number of degrees of freedom?

• A)n - 1
• B)2n - 1
• C)2(n - 1)
• D)n - 2