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math

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what percebt of total population is found betweenthe mean and the z-score, assume z=2.57

  • math -

    mean --> z score of 0

    my method of choice for these questions:
    http://davidmlane.com/normal.html

    click on "between" , enter 0 and 2.57 to get

    .4949 or 49.49%

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