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Mathematics, 27.06.2020 20:01 arunamvr
In a recent year, a poll asked 2324 random adult citizens of a large country how they rated economic conditions. In the poll, 23% rated the economy as Excellent/Good. A recent media outlet claimed that the percentage of citizens who felt the economy was in Excellent/Good shape was 22%. Does the poll support this claim? a) Test the appropriate hypothesis. Find a 90% confidence interval for the proportion of adults who rated the economy as Excellent/Good. Check conditions. b) Does your confidence interval provide evidence to support the claim? c) What is the significance level of the test in b? Explain.
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