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Math Help - My answer doesn't match the book

  1. #1
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    My answer doesn't match the book

    I have a book with two examples for calcuating Confidence interval and it displays the answer, however I can't come up with the same answer. So, What is the answer to these two questions.

    24.1 - 1.96 * (10/5.47) =

    24.1 + 1.96 * (10/5.47) =

    My answer is almost double what the book has.
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  2. #2
    GAMMA Mathematics
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    Quote Originally Posted by Swagg View Post
    I have a book with two examples for calcuating Confidence interval and it displays the answer, however I can't come up with the same answer. So, What is the answer to these two questions.

    24.1 - 1.96 * (10/5.47) =

    24.1 + 1.96 * (10/5.47) =

    My answer is almost double what the book has.
    \frac{10}{5.47} = 1.828

    1.828*1.96 = 3.583

    24.1 \pm 3.583 = [20.517, 27.683]

    Was that your answer?
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  3. #3
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    Not my answer, it was the books answer, however I see my mistake.

    Thank You.
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