posted by nono .
there are 200 subjects enrolled to receive either experimental medications or placebo. At the end of study following data is collected after 6 week.
(sd)= standard deviation.
BP= blood pressure.
experimental meds placebo
Mean BP 120.2(sd 15.4) 131.4(sd18.9)
High BP 14% 22%
Side effect 6% 8%
a)Test if there is a significant difference in mean BP between two groups using alpha=0.05.
b) Test if there is a significant difference in the proportion of high BP patients between groups using alpha=0.05.