Algebra-1

Question Analysis
This question evaluates the student's ability to identify a sample in a real-world context. The student must recognize that the 1,000 adults selected for the survey are a subset of the entire adult population in the country, which is the sample.

Key Concept Explanation
A sample is a subset of representative individuals or observations selected from the population, used to infer or estimate the characteristics of the population.

Step-by-step Solution
1. Identify the overall scope of the study: The health organization is interested in the averag...