Suppose that the mean systolic blood pressure for women over age seventy is 133 mm Hg (millimeters of mercury), with a standard deviation of 6 mm Hg. Suppose that the blood pressures are normally distributed. Complete the following statements.

(a) Approximately 68% of women over seventy have blood pressures between? ____ Hg and ___ mm Hg

(b) Approximately ____of women over seventy have blood pressures between 121 mm Hg and 145 mm Hg.