Independent Simple Random Samples Are Selected to Test the Difference

question 11

Multiple Choice

Independent simple random samples are selected to test the difference between the means of two populations whose standard deviations are not known. We are unwilling to assume that the population variances are equal. The sample sizes are n₁ = 25 and n₂ = 35. The correct distribution to use is the t distribution with ______ degrees of freedom.

• A) 25
• B) 35
• C) 58
• D) The correct degrees of freedom cannot be calculated without being given the sample standard deviations.

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