a) What is the probability of encountering a person of type A blood?
b) What is the probability of encountering a person who has either type A or type AB blood?
|
Blood type
|
frequency
|
Relative frequency
|
Cumulative frequency
|
|
O
|
2672
|
0.49
|
2672
|
|
A
|
2041
|
0.37
|
4713
|
|
B
|
486
|
0.09
|
5199
|
|
AB
|
201
|
0.03
|
5400
|