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Q48 Single choice

A county in Illinois is conducting a survey to determine the mean annual income per household. The county is 427sq mi (2.65q km).

Which of the following sampling methods would MOST likely result in a representative sample?

A
A stratified phone survey of 100 people that is conducted between 2:00 p.m. and 3:00 p.m.
B
A systematic survey that is sent to 100 single-family homes in the county.
C
Surveys sent to ten randomly selected homes within 5mi (8km) of the county's office.
D
Surveys sent to 100 randomly selected homes that are reflective of the population.

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