Mathematics, 01.05.2021 05:00 nae467
There are four blood types, and not all are equally likely to be in blood banks. 49% of donations are type o blood,
27% of donations are type A blood, 20% of donations are type B blood, and 4% of donations are type AB blood. A
person with type A blood can safely receive blood transfusions of type O and type A blood. What is the probability
that if 3 donations are made, all 3 of them can be safely used in a blood transfusion on someone with type A blood?
(0.27)3 = 0.0197
(0.49)3 = 0.1176
(0.27)3 + (0.49)3 = 0.1373
O (0.27 +0.49)3 = 0.4390
Answers: 3
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