# biostatistic

posted by
**nono** on
.

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

(n=100) (n=100)

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.