Question
IQ scores are measured with a test designed so that the mean is 105105 and the standard deviation is 1919 . Consider the group of
IQ scores are measured with a test designed so that the mean is 105105 and the standard deviation is 1919.
Consider the group of IQ scores that are unusual. What are the z scores that separate the unusual IQ scores from those that are usual? What are the IQ scores that separate the unusual IQ scores from those that are usual? (Consider a value to be unusual if its z score is less than minus2
or greater than 2.)
What are the z scores that separate the unusual IQ scores from those that are usual?
The lower z score boundary is :
(Simplify your answer.)
The higher z score boundary is :
(Simplify your answer.)
What are the IQ scores that separate the unusual IQ scores from those that are usual?:
The lower bound IQ score is :
(Simplify your answer.)
The higher bound IQ score is:
(Simplify your answer.)
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