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Answer :
The percentage of adults in the town of Bridgeport with a systolic blood pressure less than 128 mmHg is
A 16%
How to find the percentage of adults
To determine the percentage of adults in the town of Bridgeport with a systolic blood pressure less than 128 mmHg using the 68-95-99.7 rule, we can follow these steps:
Calculate the z-score corresponding to a systolic blood pressure of 128 mmHg using the formula:
z = (x - mean) / standard deviation
where x is the value (128 mmHg), mean is the mean of the distribution (137 mmHg), and standard deviation is the standard deviation of the distribution (9 mmHg).
z = (128 - 137) / 9 = -1
p score for a z-score of -1 is approximately 0.1587.
Percentage = 0.1587 * 100 ≈ 15.87%
Therefore, approximately 16% of adults in the town of Bridgeport have a systolic blood pressure less than 128 mmHg.
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