in adittion to being grouped into four types, human blood is grouped by Rhesus (Rh) factor. consider the figures below which show the distribution of these groups for americans. O A B AB rh + 37% 34%...

in adittion to being grouped into four types, human blood is grouped by Rhesus (Rh) factor. consider the figures below which show the distribution of these groups for americans.

                  O                A                  B           AB

rh +          37%            34%             10%        4%

rh -           6                6                     2           1

choose one american at random. find the probability that the person

a. is a universal donor (has O- blood type)

b. has type O blood given that the person is Rh+

c. has A+ or AB- blood

d. has Rh- given that the person has type B