Answer:
the sample of the population are all students from the high school and middle school that were analyzed in Miami.
Step-by-step explanation:
The population concerns the universe, that is, the totality of what one wants to analyze. The sample, in turn, represents a part of the population that is analyzed to draw conclusions about the population itself. In this case, the population is all high school and middle school students, while the sample is the two schools surveyed. That is, the sample of the population are all students from the high school and middle school that were analyzed.