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Mathematics, 18.12.2019 06:31 coryowens44
Before the presidential debates, it was expected that the percentages of registered voters in favor of various candidates to be as follows. percent democrats 48% republicans 38% independent 04% undecided 10% after the presidential debates, a random sample of 1200 voters showed that 540 favored the democratic candidate; 480 were in favor of the republican candidate; 40 were in favor of the independent candidate, and 140 were undecided. at 95% confidence, test to see if the proportion of voters has changed.
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