Congress passed the Health Care Reform Act in 2010 that will require all small businesses to have a health plan in place by 2014 and included the provision that no one could be denied coverage due to pre-existing conditions. A Newsweek Poll based on n 848 registered voters nationwide asked respondents to "Please tell me if you think the health care reform law passed earlier this year was good for the country or bad for the country in general."4 The data that follow are based on the results of this poll.

a. Are there significant differences in the proportions of those surveyed who think the health care reform law is good, bad, or unsure among the Republicans, Democrats, and Independents? Use α = .05.
b. If significant differences exist, describe the nature of the differences by finding the proportions of those who think the law is good, bad, or unsure for each of the given affiliations.

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Affiliation Good 32 277 51 Bad 301 60 58 Unsure 17 37 19 Total 350 374 128 Republicans Democrats Independents