posted by .

Every Persons blood belongs to one of four blood groups. The percentage of U.S. blood donors to the Red Cross is given:

Type A=37% B=12.5% AB=3.5% O=47%

a)What is the Probability that the blood of any two unrelated people in a Red Cross blood drive belong to the same group?

Is this correct?
P(Ba)=.37 P(Bb)=.125 P(Bab)=.035 P(Bo)=.47

P(Samegroup)=P(Ba)^2+P(Bb)^2+P(Bab)^2+P(Bo)^2= 0.37465 ?

b)What is the probability that the blood of any four unrelated people in an american red cross blood drive belong to each of the four groups?

  • Probability -

    a) correct
    b) four unrelated people standing in a row. Probability that they are in this exact order: A, B, AB, O is .37*.125*.035*.47 = .0007608
    Now then, the number of ways these four people can be re-arranged is 4*3*2*1 = 24.
    So, Probability is 24*.0007608 = .01826

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Mathematics

    The blood types B- and AB- are the rarest of the eight huan blood types representing 1.5% and .6% respectively. a) If the blood types of a random sample of 1000 blood donors are recorded, what is the probability that 10 or more will …
  2. biology

    Genetic question If a man with blood type A, one of whose parents had blood type O, marries a woman with blood type AB, what will be the theoretical percentage of their children with blood type A?
  3. math

    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?
  4. science

    2. Which of the following is responsible for carrying nutrients to and waste from the body’s cells?

    2. Which of the following is responsible for carrying nutrients to and waste from the body’s cells?
  6. Science

    the probability of having blood group B is 0.08. what is the probability that if one pints of blood is taken from each of 100 unrelated blood donors fewer than three pints of group B blood will be obtained?
  7. statistics

    30. The probability that a person can get infected with a rare type of blood disorder is very small. Suppose that a blood test performed on 10,000 people showed that two persons tested positive that is, a 0.02% chance of getting this …
  8. Math

    200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B, and 21 of blood group O. What is the probability that a randomly chosen student has either blood group …
  9. Biology 30

    For ABO blood groups in the humans, the A and B genes are codminant. Both A and B are dominant over O a. Identify the possible blood types in the children of a man with blood type O and a woman with blood type AB. My work: The possible …
  10. Probability

    Consider 100 blood donors chosen randomly from a population where the probability of typer a is .40?

More Similar Questions