which sample fairly represents the population...
which sample fairly represents the population? select two options.\n□ measuring the height of every fiftieth person on the school roster to determine the average height of the boys in the school\n□ calling every third person on the soccer - teams roster to determine how many of the team members have completed their fundraising assignment\n□ observing every person walking down main street at 5 p.m. one evening to determine the percentage of people who wear glasses\n□ sending a confidential e - mail survey to every - hundredth parent in the school district to determine the overall satisfaction of the residents of the town\n□ taking a poll in the lunch room (where all students currently have to eat) to determine the number of students who want to be able to leave campus during lunch
Answer
# Brief Explanations:
- Measuring every fiftieth person on school roster for boys' height is not fair as it doesn't distinguish between genders properly in selection and may not be truly random for just boys.
- Calling every third person on soccer - team roster is a fair sample for the soccer - team population regarding fundraising assignment completion.
- Observing people on Main Street at a specific time is not a fair sample for the general population as it only includes people out at that time and place.
- Sending e - mail survey to every one - hundredth parent is not a fair sample for town residents as it only targets parents in school district.
- Taking a poll in lunch room where all students eat is a fair sample for students regarding leaving campus during lunch as it includes all current lunch - eating students.
# Answer:
- Calling every third person on the soccer team's roster to determine how many of the team members have completed their fundraising assignment.
- Taking a poll in the lunch room (where all students currently have to eat) to determine the number of students who want to be able to leave campus during lunch.