Questions: A polling organization contacts 1197 teenagers who are 13 to 17 years of age and live in the United States and asks whether or not they had attended a concert this past year. What is the population in the study? A. Teenagers who are 13 to 17 years of age and live in the United States. B. Teenagers who are 13 to 17 years of age and live in the United States and have attended a concert. C. Teenagers who are 13 to 17 years of age and have attended a concert. D. Teenagers who are 13 to 17 years of age.

Solution Steps

The population in a study refers to the entire group of individuals that the study aims to investigate. In this case, the study is about teenagers who are 13 to 17 years of age and live in the United States. The question specifically asks about this group, regardless of whether they have attended a concert or not.

• Option A: Teenagers who are 13 to 17 years of age and live in the United States. This matches the description of the population in the study.
• Option B: Teenagers who are 13 to 17 years of age and live in the United States and have attended a concert. This is a subset of the population, not the entire population.
• Option C: Teenagers who are 13 to 17 years of age and have attended a concert. This is also a subset of the population, not the entire population.
• Option D: Teenagers who are 13 to 17 years of age. This does not specify the location, which is a key part of the population description.

Based on the analysis, Option A is the correct choice because it accurately describes the entire population being studied: teenagers who are 13 to 17 years of age and live in the United States.

Final Answer