All human blood is one of the four types: O,A,B,or AB. The distribution of the types varies a bit with race. If you choose an African American person at random, here is a table of the approximate probabilities of that person having each of the different blood types.

Blood Type O A B AB
Probabilty 0.5 ? 0.2 0.05

Using the table of probability above, the probability that the person chosen has blood type A is

0.05
0.25
0.27
0.40
0.65

Question

All human blood is one of the four types: O,A,B,or AB. The distribution of the types varies a bit with race. If you choose an African American person at random, here is a table of the approximate probabilities  of that person having each of the different blood types.

Blood Type  O    A     B       AB
Probabilty  0.5    ?    0.2    0.05

Using the table of probability above, the probability that the person chosen has blood type A is

0.05
0.25
0.27
0.40
0.65

anonymous · Answer

is this a math question or a science question. (im just asking) i think A would be 0.25

anonymous · Answer

Math