# math

posted by
**bria** on
.

Suppose 48% of the general population of thw world has blood type O, 27% blood type A, and 23% blood type B.

a. what is the probability that someone has type AB blood( assume that there are only four blood types?

b. Of tjere are 30 people in a room,how many would you expect to have type A blood?

I got for the first answer a 2/27= 0.07 b. 27/30=0.9, I am not sure if this correct.