SOLUTION: Choose a person at random and give him or her an iq test. the score y has the normal distribution with mean=100 and standard deviation=15. the probability that the person chosen ha

Question 386860: Choose a person at random and give him or her an iq test. the score y has the normal distribution with mean=100 and standard deviation=15. the probability that the person chosen has an iq score higher than 120 is what?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Choose a person at random and give him or her an iq test. the score y has the normal distribution with mean=100 and standard deviation=15. the probability that the person chosen has an iq score higher than 120 is what?
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z(120) = (120-100)/15 = 1.3333..
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P(x > 120) = P(z > 1.3333..) = 0.0912
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Cheers,
Stan H.
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