The following table shows the blood groups of 40 students of a class.
Blood group | A | B | O | AB |
Number of students | 11 | 9 | 14 | 6 |
One student of the class is chosen at random. What is the probability that the chosen student has blood group(i) O? (ii) AB?
Total number of Students: 40
Number of Students having blood group O: 14
Number of Students having blood group AB: 6
Probability P() =
1.Let P(O) be probability of selecting a student with Blood group O
P (O) =
P (O) = = 0.35
2.Let P(AB) be probability of selecting a student with Blood group AB
P (AB) =
P (AB) = = 0.15