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    Dreamstarr03's Avatar
    Dreamstarr03 Posts: 5, Reputation: 1
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    #1

    Jul 29, 2007, 09:45 AM
    Statistics/normal curve/standard deviation
    In a normal curve approximately _____percent of cases are lower than two standard deviations below the mean?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Jul 29, 2007, 09:56 AM
    Just take a look at the standard normal curve.
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    mathtutor's Avatar
    mathtutor Posts: 30, Reputation: 2
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    #3

    Jul 30, 2007, 05:36 AM
    2.5
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