Suppose that a researcher is interested in estimating the meansystolic blood pre

Suppose that a researcher is interested in estimating the meansystolic blood pressureu of executives of major corporations. Heplans to use the blood pressures of a random sample of executivesof major corporations to estimate u. Assuming that the standarddeviation of the population of systolic blood pressures ofexecutives of major corporations is 25 mm Hg what is the minimumsample size needed for the researcher to be 95% confident that hisestimate is within 3 mm Hg of u?