Question

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?

Answer 1

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

Answer 2

Answer:97.4

Explanation:

use calculator

Lower: 69

Upper: 137

Mean:100

Standard deviation: 15