# SOLUTION: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 105, what percentage of the population has an IQ lower than h

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 105, what percentage of the population has an IQ lower than h      Log On

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 Click here to see ALL problems on Probability-and-statistics Question 464015: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 105, what percentage of the population has an IQ lower than hers?Answer by edjones(7569)   (Show Source): You can put this solution on YOUR website!z=(105-100)/15=5/15=0.333 The area of the normal curve below 0.333 = 0.63 or 63% of the population has an IQ lower than hers. . Ed