The mean diastolic blood pressure for a random sample of70 people was82millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be10millimeters 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. (If necessary, consult alist of formulas.)

Lower limit: _____

Upper limit: _____