Suppose that the mean IQ in the United States is roughly 100 and the standard deviation is 15 points. People with IQs of 145 or higher are considered “geniuses” on some scales of measurement. What percentage of the population is expected to have an IQ of 145 or higher? In a country with 300 million people, how many geniuses are there expected to be?
Suppose that the mean IQ in the United States is roughly 100 and the standard deviation is 15 points. People with IQs of 145 or higher are considered “geniuses” on some scales of measurement. What percentage of the population is expected to have an IQ of 145 or higher? In a country with 300 million people, how many geniuses are there expected to be?
Chapter6: Off To School: Cognitive And Physical Development In Middle Childhood
Section6.2: Aptitudes For School
Problem 4TY
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Suppose that the mean IQ in the United States is roughly
100 and the standard deviation is 15 points. People with
IQs of 145 or higher are considered “geniuses” on some
scales of measurement. What percentage of the population is expected to have an IQ of 145 or higher? In a country with 300 million people, how many geniuses are
there expected to be?
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