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 citys 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:

• For the first option, a yearbook may not cover all girls in the US, so it's not a fair sample.
• The second option: People exiting a vitamin store are more likely to be health - conscious (and thus more likely to exercise), so it's a biased sample.
• The third option: Calling only Republican Party members won't represent all voters in a city's mayoral race.
• The fourth option: Sending a survey to every tenth employee is a systematic random sample, which can fairly represent the company's employees.
• The fifth option: Taking a poll in the main hallway between classes can reach a diverse group of students (assuming it's a large enough sample), so it can be a fair representation for the student population regarding the school trip.

Answer:

• 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.