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IQ Test Scores Are Normally Distributed with a Mean of 100

Question 124

Multiple Choice

IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. An individualʹs IQ score is found to be 90. Find the z-score corresponding to this value.


A) -0.67
B) 0.67
C) 1.33
D) -1.33

Correct Answer:

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