Use the Following to Answer the Question(s) Below

question 19

Multiple Choice

Use the following to answer the question(s) below.
A sample of 30-year fixed mortgage rates at 12 randomly chosen credit unions yields a mean rate of 6.65 % and a sample standard deviation of 0.39%. A sample of 30-year fixed mortgage rates at 16 randomly selected banks yields a mean rate of 7.05% and a sample standard deviation of 0.22%. Are the mean rates different between credit unions and banks? Relevant output is shown below.
-Which of the following is true?

• A) This is a paired t-test.
• B) This is a test for two means from independent samples.
• C) This is a one-tailed test.
• D) This is a paired design and one-tailed t-test.
• E) This is a pooled t-test.

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