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9. You are interested in estimating the the mean distance students travel to school. From past data, you estimate that the standard deviation of distances

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You are interested in estimating the the mean distance students travel to school. From past data, you estimate that the standard deviation of distances to be approximately 2 miles. What sample size would you need to in order to estimate the mean distance students travel to school, with a 98% confidence level, to within 0.8 miles of the actual distance? Sample Size: n >

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