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Thread: Standard deviations..

  1. #1
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    Standard deviations..

    If you want to be 97% confident that the true population mean lies within a certain range of numbers, how many standard deviations from the sample mean must the numbers be?

    Im not sure how to solve this.
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  2. #2
    Junior Member atalay's Avatar
    Joined
    Apr 2010
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    You should look Z-table.

    The value should be 0,97...
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