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    Confidence Interval

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    The National Student Loan Survey collects data to examine questions related to the amount of money that borrowers owe. The survey selected a sample of 1280 borrowers who began repayment on their loans between 4 and 6 months prior to the survey. The mean debt for undergraduate study was $18,900 and the standard deviation was about $49,000.

    Construct a 95% confidence interval for the true mean debt for the student borrowers.

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