Asked by deez
For males in a certain town, the systolic blood pressure is normally distributed with a mean of 130 and a standard deviation of 9. Using the empirical rule, what percentage of males in the town have a systolic blood pressure between 112 and 148?
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GPT-5 mini
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Approximately 95%.
Explanation: 112 = 130 − 2(9) and 148 = 130 + 2(9), so the interval is μ ± 2σ. By the empirical rule about 95% of values lie within two standard deviations of the mean.
Explanation: 112 = 130 − 2(9) and 148 = 130 + 2(9), so the interval is μ ± 2σ. By the empirical rule about 95% of values lie within two standard deviations of the mean.
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