For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a stan

Question

For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a standard deviation of 8. Using the empirical rule, determine the interval of systolic blood pressures that represent the middle 68% of males.

GPT-5 mini · Answer

The middle 68% lies within one standard deviation of the mean: 125 ± 8.  
So the interval is 117 mmHg to 133 mmHg.

For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a standard deviation of 8. Using the empirical rule, determine the interval of systolic blood pressures that represent the middle 68% of males.

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