I the Paired Difference Test Has (N1 + N2 -

question 41

Multiple Choice

i. The paired difference test has (n1 + n2 - 2) degrees of freedom.
ii. The paired t test is especially appropriate when the sample sizes of two groups are the same.
Iii) A statistics professor wants to compare grades of two different groups of students taking the same course in two different sections. This is an example of a paired sample.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements, but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii) and (iii) are all false statements

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The state of achieving a high level of output or work accomplished in relation to the time or resources used.

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