Question

which sample fairly represents the population? select two options.
□ using a yearbook to determine the most popular names for girls in the united states
□ asking the people exiting a vitamin store how often they exercise to determine the amount of time the average american exercises
□ calling every registered member of the national republican party to determine the voter turnout for a city’s mayoral race
□ sending a mandatory and confidential e - mail survey to every tenth employee of a company to determine overall job satisfaction
□ taking a poll in the main hallway between classes to determine the number of students who would be interested in a school trip to new york city

Explanation:

1. Yearbook for US girl names: A yearbook only represents one school's population, not all girls in the US, so it's not a fair sample.
2. Vitamin store patrons for exercise habits: People at a vitamin store are likely more health-focused than the average American, creating a biased sample.
3. National Republicans for city mayoral turnout: National Republicans do not represent all voters in a single city's mayoral race, so this is biased.
4. Every tenth employee for job satisfaction: This is a systematic random sample that evenly selects across the company's employee population, making it fair.
5. Hallway poll for student trip interest: Polling students in the main hallway between classes captures a broad cross-section of the student population, making it a fair sample.

Answer:

D. sending a mandatory and confidential e-mail survey to every tenth employee of a company to determine overall job satisfaction
E. taking a poll in the main hallway between classes to determine the number of students who would be interested in a school trip to New York City