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Math Help - Calculate the confidence interval

  1. #1
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    Calculate the confidence interval

    I am trying to calculate the confidence interval for this problem using my T-84



    I go to Stat>Test>7 and get a value so close to the right answer (22772,30058). However the correct answer is (22769.83, 30059.41). How can I get a more precise answer, which is equal to the one provided? the calculator doesn't include the cents.
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  2. #2
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    Re: Calculate the confidence interval

    Mostly, in my view, the request for a 95.44% interval is a little silly. Is there REALLY data to justify that?
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  3. #3
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    Re: Calculate the confidence interval

    This is the complete question. *pulls hair out*
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  4. #4
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    Re: Calculate the confidence interval

    Rather than maim yourself, why not figure out the error? The "correct" answer appears to be incorrect. That coresponds to a 95.45% Confidence Interval and is just as silly as that requested in the problem statement.
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