Blood groups of 25 donors of blood are listed below. Find the probability that a sample chosen at random is o positive. AB, A', AB, B+, B, O, ABC, A, A-,0",0- 0-, AB, 0, 0, 0, 0, 0+, A, B, B+, 0+, 0, A, A
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Answer:
Blood group No. of students
A 9
B 6
O 12
AB 3
Total 30
Number of students having blood group AB=3
Total students =30
P =
30
3
=
10
1
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