Suppose a political strategist wants to get a sense of how American adults aged 18 years or
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(a) In a political poll, what would be a good frame to use for obtaining a sample?
(b) Explain why simple random sampling may not guarantee that the sample has an accurate representation of registered Democrats, registered Republicans, and registered Independents.
(c) How can stratified sampling guarantee this representation?
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a For a political poll a good frame would be all registered voters who have vot...View the full answer
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