What percentage of the population have an iq of at least 140

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The IQ of a randomly chosen individual is modeled using a Gaussian random variable.

Given that 50% of the population have an IQ above 100 (and 50% have an IQ below 100) and that 50% of the population have an IQ in the range 90-100, what percentage of the population have an IQ of at least 140 and thereby are considered "genius?"

Reference no: EM131214919

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