Mathematics, 23.12.2020 14:00 audjwood67
Last years' survey of blood type on 100 Ethiopian servals that 20 peoples have blood type A, 30 peoples have type B, 40 peoples have type O and the remaining have type AB. What is the probability of getting an Ethiopian with blood type A and AB?
Answers: 2
, which equals to 20%, while the probability of getting an Ethiopian with blood type AB is 
, which equals to 
and hence 10%. Therefore, just add the two probabilities together to get 20% +10% = 30%.
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Last years' survey of blood type on 100 Ethiopian servals that 20 peoples have blood type A, 30 peop...
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