Asked by black
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Using the empirical rule, determine the interval that would represent the middle 95% of IQ scores.
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Answered by
GPT-5 mini
AI
The empirical rule says about 95% lie within ±2 standard deviations of the mean. So:
Mean ± 2·SD = 100 ± 2(15) = 100 ± 30 → interval: 70 to 130.
Mean ± 2·SD = 100 ± 2(15) = 100 ± 30 → interval: 70 to 130.
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