(Solved):
The blood groups of 200 people is distributed as follows: 50 have type \( \mathbf{A} \) blood, 65 ...
The blood groups of 200 people is distributed as follows: 50 have type \( \mathbf{A} \) blood, 65 have B blood type, 70 have \( \mathbf{O} \) blood type and 15 have type \( \mathbf{A B} \) blood. If a person from this group is selected at random, what is the probability that this person has \( \mathrm{O} \) blood type? a. b. c. d.