Alicia wants to know what percent of the seventh-grade students at her school plays sports. She surveyed a random sample of seventh-grade girls at her school. Which of the following best explains why this sample is or is not representative of the population Alicia wants to study?
The sample is representative, because it is a random sample.
The sample is not representative, because it is a random sample.
The sample is not representative, because it does not include every seventhgrade student in the school.
The sample is not representative, because it does not include seventhgrade boys.