Hydrochlorothiazide Propranolol b. Calculate the 95% confidence interval for Po (the proportion attaining goal BP on hydrochlorothiazide among Blacks). Note Z0.025=1.96 . (4 points) c. Calculate the 95% confidence interval for P1 (the proportion attaining goal BP on propranolol among Blacks). (4 points) d. Explain and compare the 95% confidence intervals of P, and Po by writing one on top of another. Are these two intervals overlapping? (1 point)