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In a survey, 29 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean

In a survey, 29 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $10. Find the margin of error at a 99% confidence level. Give your answer to two decimal places

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