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In a simple random sample of 398 voters 212 said that they were planning to...

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In a simple random sample of 398 voters 212 said that they were planning to vote for the incumbent mayor in the next election a Construct a 99 confidence interval for the proportion of voters who plan to vote for the incumbent mayor in the next election Critical value z or t Margin of Error E Confidence Interval Enter the positive one b Interpret your result in part a in a complete sentence c Based on the confidence interval can you conclude that more than 50 of the voters plan to vote for the incumbent mayor Yes No d If the confidence level were 90 rather than 99 would the confidence interval be wider or narrower than the result in part a Wider Narrower e If the sample size were 200 rather than 398 would the confidence interval be wider or narrower than the result in part a Wider

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