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Confidence interval for true mean diastolic blood pressure

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The mean diastolic blood pressure for a random sample of 80 people was 84 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 9 millimeters of mercury, find a 95% confidence interval for the true mean diastolic blood pressure of all people. Then give its lower limit and upper limit.

Reference no: EM132858366

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