Maggie wants to know how many students in her school enjoy watching sports on tv. she asks all 25 students in her math class and finds that 60% of her classmates enjoy watching sports on tv. she claims that 60% of the school's student population would be expected to enjoy watching sports on tv. is maggie making a valid inference about her population?
yes, it is a valid inference because she asked all 25 students in her math class
yes, it is a valid inference because her classmates make up a random sample of the students in the school
no, it is not a valid inference because her classmates do not make up a random sample of the students in the school
no, it is not a valid inference because she asked all 25 students in her math class instead of taking a sample from her geography class