Studying media statistics causes weight gain from all the extra statistics facts shoved into the brain. All semester, I have secretly been gathering data using invisible weight gauges connected to your computers. Here are the results: Among a random sample of 230 students studying statistics, the average weight gain per student caused by statistics facts has been 8.6 pounds, with a sample standard deviation of 3.1 pounds. Knowing this, what is the 95% confidence interval of the average weight gain per student I would see if I taught statistics to all students?

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