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Test: Final Exam Time Remaining: 03.11:33 Submit Test Answe This Question: 1 pt 15 of50 (12 complete) This Test: 50 pts possible IQ scores are measured with a test designed so that the mean is 120 and the standard deviation is 11. Consider the group of 1Q 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 greater than 2.) M What are the z scores that separate the unusual IQ scores from those that are usual? 0 The lower z score boundary is 7(Simplify your answer.) de The higher z score boundary is Simplify your answer.) What are the lQ scores that separate the unusual IQ scores from those that are usual? The lower bound 1Q score is ping ict? 9 (Simplify your answer.) an The higher bound IQ score is (Simplify your answer.) Still I Contact Nat

Explanation / Answer

Solution:- given information mean = 120, sd = 11,

=>
-> The lower z score boundary is -2

-> The higher Z score boundary is 2

=>
-> The lower bound Iq score is 98
=> mean + (lower z score x standard deviation) = mean + Z*sd = 120 - (2*11) = 98

-> The higher bound Iq score is 142
=> mean + (lower z score x standard deviation) = mean + Z*sd = 120 - (2*11) = 142

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