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In a survey, 41 people were asked how much they spent on their child's last birthday...

In a survey, 41 people were asked how much they spent on their child's last birthday gift. The

          results were roughly bell-shaped with a mean of $40 and standard deviation of $15. Construct

          and interpret a confidence interval at a 98% confidence level. What is the margin of error?

Math   Statistics-And-Probability   
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