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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What percentage of people have an IQ score between 69 and 137, to the nearest tenth?
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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What percentage of people have an IQ score between 69 and 137, to the nearest tenth?

User Gordon Guthrie
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e.g. IQ is normally distributed (mean = 100, SD = 15). 68% of people have IQs between 85 and 115 (100 +/- 15). Hope this helps!
User Ctn
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Answer:97.4

Explanation:

use calculator

Lower: 69

Upper: 137

Mean:100

Standard deviation: 15

User Martypdx
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