PLEASE HELP
people with type O negative blood or universal donors. That is, any patient can receive a transfusion Of O-negative blood. Only 12% of the American population has O negative blood. 10 people appear at random to give blood, what is the probability that none of them is the universal donor.
1-0
2-0.280
3-0.526
4- 0.720
5- 1
I would say 2 is the correct answer because I know the chances are low, but not exactly zero, and 3 is wrong because it is definitely not more than half
