When Testing for the Difference Between the Means of Two

question 59

Multiple Choice

When testing for the difference between the means of two independent populations,with samples of sizes n₁ and n₂,where the population variances are unknown but assumed to be equal,what is the number of degrees of freedom?

• A)n - 1
• B)n₁ + n₂ - 1
• C)n₁ + n₂ - 2
• D)n - 2

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