200
Twenty four people had a blood test and the results are shown below.
A , B , B , AB , AB , B , O , O , AB , O , B , A
AB , A , O , O , AB , B , O , A , AB , O , B , A
a) Construct a frequency distribution for the data.
b) If a person is selected randomly from the group of twenty four people, what is the probability that his/her blood type is not O?
What is
class frequency
A 5
B 6
AB 6
O 7
1 - (7/24) = 17/24 = 0.71 (rounded to 2 decimal places)