100% Q scores are measured with a test designed so that the mean is 91 and the s

Question

100% Q scores are measured with a test designed so that the mean is 91 and the standard deviation is 10 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 -2 or greafer 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 IO scores from those that are usual? The lower bound IQ score is Simplify your answer.) The higher bound 1Q score is Simplify your answer.) Enter your answer in each of the answer boxes

Explanation / Answer

Lower z boundary = -2

Upper z boundary = 2

Lower IQ score = 91 - 2*10 = 71

Upper IQ score = 91 + 2*10 = 111

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