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If an IQ distribution is normal and has a mean of 100 and a standard deviation of 15, then 99% of all those taking the test scored between IQ's of

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When more than 34% of the cases under the curve fall between the mean and a z score of + 1, then

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Under the normal curve, the percentage of cases falling above a z score of + 3, is

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Under the normal curve, if the mean of the distribution of raw scores is equal to 68, then its equivalent z score is equal to

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When the normal curve is plotted according to standard deviation units, each having a value of 1.00, it is called

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If an IQ distribution is normal and has a mean of 100 and a standard deviation of 15, then 68% of all those taking the test scored between IQ's of

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Under the normal curve, between the z scores of + 1 and + 2, there are always

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