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In a survey, 16 people were asked how much they spent on their child's last birthday gift. The results were roughly shaped as a normal
In a survey, 16 people were asked how much they spent on their child's last birthday gift. The results were roughly shaped as a normal curve with a mean of $40 and standard deviation of $12. Construct a confidence interval at a 80% confidence level.
Give your answers to one decimal place.
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(Note this is NOT in interval form, so check your answer carefully)
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