Human blood is classified by the presence or absence of three main antigens (A,
ID: 3362244 • Letter: H
Question
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 certain 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 6.1 9.5 1.5 3.4 0.8 37.2 5.6
(a) What is the probability that a person selected randomly from the population has a blood type that is type O or Rh+?
b) What is the probability that a person selected randomly from the population has a blood type that contains the A antigen?
(c) What is the probability that a person selected randomly from the population has a blood type that is type AB or Rh?
Explanation / Answer
from above given table
therefore
a) probability that a person selected randomly from the population has a blood type that is type O or Rh+
=(35.9+9.5+3.4+37.2+5.6)/100=0.916
b) probability that a person selected randomly from the population has a blood type that contains the A antigen=(35.9+6.1)/100=0.42
c) probability that a person selected randomly from the population has a blood type that is type AB or Rh
=(6.1+1.5+3.4+0.8+5.6)/100=0.174
A+ 35.9 A 6.1 B+ 9.5 B 1.5 AB+ 3.4 AB 0.8 O+ 37.2 O 5.6 total 100Related Questions
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