Seudónimo Seudónimo

01-03-2017
Mathematics

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The scores of adults on an iq test are approximately normal with mean 100 and standard deviation 15. corinne has 118 on such test. she scores higher than what percent of all adults?

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LammettHash LammettHash

01-03-2017

[tex]\mathbb P(X<118)=\mathbb P\left(\dfrac{X-100}{15}<\dfrac{118-100}{15}\right)=\mathbb P(Z<1.2)\approx0.8849[/tex]

or approximately 88.5%.

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