The blood groups of 20 students of a class are recorded as below:
B
A
B
O
AB
O
A
AB
O
B
B
AB
AB
O
A
O
A
B
AB
O
A student is selected at random. Find the probability that his blood group is:
(i) A
(ii) B
(iii) ab
Answers
Answered by
2
Answer:
The rarest blood group is AB as the frequency of the students with this blood group is the least. The blood groups of 30 students of Class VIII are recorded as follows: A,B,O,O,AB,O,A O,B,A,O,B, A,O,O, A,AB,O,A,A,O,O,AB,B,A,O,B,A,B.O.
...
Statistics.
Age (in years) Number of children
3–5 6
5–7 12
7–10 9
10–15 10
Answered by
1
Answer:
A,AB,O,A,A,O,O,AB,B,A,O,B,A,B.O. Represent this data in the form of a frequency distribution table. Which is the most common and which is the rarest, blood group among these students. O is the most common and AB is the rarest blood group among these students.
There is an 86% chance that a randomly selected person in the United States can donate blood to someone with type A blood.
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