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Construct and interpret the 85% confidence interval of the mean amount of money spent on a doctors visit. An irate patient complained that the cost

Construct and interpret the 85% confidence interval of the mean amount of money spent on a doctors visit.

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An irate patient complained that the cost of a doctor's visit was too high. He randomly surveyed 20 other patients and found that the mean amount of money they spent on each doctor's visit was $48.60. The standard deviation of the sample is $3.53. [4 pts]

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