The blood groups of 200 people are distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?
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To find the probability of selecting a person with O blood type, we need to calculate the total number of people with O blood type and then divide it by the total number of people in the group.
Total number of people with O blood type = 70
Total number of people in the group = 200
Probability of selecting a person with O blood type = Number of people with O blood type / Total number of people
Probability = 70 / 200 = 0.35
Therefore, the probability of selecting a person with O blood type is 0.35 or 35%.
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