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In a sample of 15 marijuana users, the mean number of prior emergency room admissions was 2.40 with a standard deviation of 0.80. Construct a

  1. In a sample of 15 marijuana users, the mean number of prior emergency room admissions was 2.40 with a standard deviation of 0.80. Construct a 99% confidence interval for the population mean number of emergency room admissions and interpret your results. (5 points)

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