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____________ ensures that each member of the population has an equal chance of being chosen
Q7: Most surveys try for a _ percent
Q21: Following World War II, which of the
Q77: What are used as the basis for
Q140: According to the authors of Struggle for
Q152: What is the result of a people's
Q155: Which of the following statements best describes
Q165: The federal government has greater regulatory authority
Q186: In 2008, Hispanic voters became especially important
Q245: Polls and surveys administered during the last
Q257: Population movements to the South and West