I If Samples Taken from Two Populations Are Not Independent

question 74

Multiple Choice

i. If samples taken from two populations are not independent, then a test of paired differences is applied. ii. The paired difference test has (n₁ + n₂ - 2) degrees of freedom.
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) is a correct statement but not (ii) or (iii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (ii) is a correct statement but not (i) and (iii).

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Definitions:

Social Relationships

The connections between individuals based on interactions, affiliations, or feelings which may affect their behavior and attitudes.

Primary Groups

Small, close-knit, and usually long-term social groups characterized by significant personal and emotional bonds.

Social Groups

Collections of individuals defined by common characteristics, such as interests, values, heritage, or occupation.

Collectives

Groups of individuals that share or are motivated by at least one common issue or interest, or work collectively on a specific project.