Question

a principal wants to find out how many hours per week the students in the school spend on exercise. which sample is likely to be most representative of the student population? all students who play a sport on a school team every fifth student from each grade from a list of registered students every fifth female student who enters the school in the morning all students whose last name begins with a randomly selected letter

Explanation:

A representative sample should be unbiased and cover different segments of the student population. Students on a school - team are more likely to exercise and don't represent all students. Selecting only female students or students with a certain last - name letter is biased. Selecting every fifth student from each grade list spreads across different grades and is more likely to be representative of the whole student body.

Answer:

every fifth student from each grade from a list of registered students