Scenario: You are helping a professor who wants to know if certain strategies (P

Question

Scenario: You are helping a professor who wants to know if certain strategies (Protective Behavioral Strategies) will be helpful for college students under 21 such that they report less alcohol consumption and fewer problems. We’re interested in testing several hypotheses. Participants were all college students at ODU. You collect data at one time-point.

Hypothesis 1: Hazardous alcohol use (AUDIT) is negatively related to academic performance (CGPA). Hypothesis 2: PBS use (PBSTotal) will be reported differently by men and women (Sex).             Hypothesis 3: Age and gender (Sex) will predict PBS use (PBSTotal).

Participants were all college students at ODU. You collect data at one time-point.

Who is our sample? Who is our population?

Explanation / Answer

Sample is all college students under age 21 at ODU

Population is the complete set of college students falling under 21

Sample is a small proportion of large population. In other words, sample is a subset from the population

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