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otez555 [7]
2 years ago
12

According to​ psychologists, IQs are normally​ distributed, with a mean of 100 and a standard deviation of 15 . a. What percenta

ge of the population has IQs between 85 and 100 ​?
Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
3 0
Answer: 34%.

By definition of normal distribution, ≈68% of the data is within 1 standard deviation of the mean. Therefore 68% of IQs are between 85 and 115, and half of that is on the lower end, 85 to 100.
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