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The mean diastolic blood pressure for a random sample of60 people was100 millimeters of mercury. If the standard deviation of individual blood pressure readings is

The mean diastolic blood pressure for a random sample of60 people was100 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be12 millimeters of mercury, find a95% confidence interval for the true mean diastolic blood pressure of all people. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.

Lower limit:

Upper limit:

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