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    simplyred37's Avatar
    simplyred37 Posts: 4, Reputation: 1
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    #1

    Oct 10, 2009, 10:16 AM
    The normal curve
    For a standard normal curve, find the z-score that separates the bottom 30% from the top 70%
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Oct 10, 2009, 10:33 AM
    Look up the corresponding z-score for .3

    z-scores go from left to right. That is, from negative infinity to z.

    Just look up .3 in the body of the table and see what that z score is.
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