Algebra-1

Question Analysis
This question involves the relationship between population and sample in experimental studies.

Key Concept Explanation
In experiments, the population is the entire group of individuals affected by or involved in the study (e.g., all users of a new method).
The sample is a selected subset of this population used to gather data.

Step-by-step Solution
The study focuses on "the effect of a new math curriculum on test scores."
The group affected by the curriculum is "all students in the district using the new cu...