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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an IQ of 122, what percent of the population has an IQ less than she does?
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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an IQ of 122, what percent of the population has an IQ less than she does?

User Ismael Miguel
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2 Answers

2 votes

Answer:

93%

Explanation:

User Douglas Correa
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You have to use a z-table for that but it is somewhere around 90%.
User Mdolbin
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