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Part 1 of3 (a) A survey by the National Consumers League estimated the nationwide proportion to be 0.30. Using this estimate, what sample size is

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Part 1 of3 (a) A survey by the National Consumers League estimated the nationwide proportion to be 0.30. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.03? A sample of I ' children aged 8-10 living in New York is needed to obtain a 90% confidence interval with a margin of error of 0.03 using the estimate 0.30 forp

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