(Answered) A what is the probability of encountering a person of

Statistics

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

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