The blood group of 200people is distributed as follows: 50 have A group, 65have B group, 70have O blood type and 15have type AB group. If a person from this group isselected at random, what is the probability that this person has O group type? Choose the correct answer
A) 0.35	B) 0.5	C) 1	D) 1.23	E) 1.25
We construct a table of frequencies for the the blood groups as follows   group frequency   a 50   B 65   O 70   0.35B 15   We use the empirical formula of the probability   Frequency for O blood   P(E)= ________________________________________________   Total frequencies   = 70 / 200= 
<gadget id="calculator">70 / 200</gadget>
<output>7/20 = around 0.35</output>
0.35   0.35
<result>A</result>
The blood group of 200people is distributed as follows: 50 have A group, 65have B group, 70have O blood type and 15have type AB group. If a person from this group isselected at random, what is the probability that this person has O group type?