Question: Last month, a pollster found that a sample proportion of 48% of the national population approve of their congressional representative. A 99% confidence interval was

Last month, a pollster found that a sample proportion of 48% of the national population approve of their congressional representative. A 99% confidence interval was constructed on this data with a 5% margin of error. Suppose instead that a 90% confidence interval was constructed on this same sample. This 90% confidence interval will have a margin of error of about

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