Human blood is classified by the presence or absence of three main antigens (a, b, and rh). when a blood specimen is typed, the presence of the a and/or b antigen is indicated by listing the letter a and/or the letter b. if neither the a nor the b antigen is present, the letter o is used. the following table gives the percent of a country's population having each of the eight possible blood types in the sample space. note that the presence or absence of the rh antigen is indicated by the symbols + or −, respectively. blood types a+ a− b+ b− ab+ ab− o+ o− percent 35.9 6.3 8.5 2.5 3.2 0.8 37.4
what is the probability that a person selected at random from the population has a blood type a given that the person is rh−? (round your answer to two decimal places.)