The pollster would like to know if these data provide convincing evidence of a relationship between residential status and political party in the population of all registered voters in Allegheny County. What is the appropriate inference procedure?

The question asks whether residential status and political party are related among registered voters, so it concerns an association between two categorical variables. Because the pollster collects data from one random sample and records both variables for each voter, the appropriate procedure is a chi-square test for association/independence. A test for homogeneity would compare separate samples or groups.

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