Question

IQ test scores are standardized to produce a normal distribution with a mean of μ = 100 and a standard deviation of σ 515. Find the proportion of the population in each of the following IQ categories.
a. Genius or near genius: IQ greater than 140
b. Very superior intelligence: IQ between 120 and 140
c. Average or normal intelligence: IQ between 90 and 109


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  • CreatedSeptember 22, 2015
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