Which sample fairly represents the population?
. 1. measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school
2. calling every third person on the soccer team's roster to determine how many of the team members have completed their fundraising assignment
3. observing every person walking down Main Street at 5 p. m. one evening to determine the percentage of people who wear glasses
4. sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction of the residents of the town
5. taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch
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