Data in table represent number of consumer complaints, Ask an Expert

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Q1) Distribution of blood types for 100 Americans is given in the table. If one donor is chosen at random, determine the probability of choosing a person with blood type A+ or A-.

Blood Type	O+	O-	A+	A-	B+	B-	AB+	AB-
Number	37	6	34	6	10	2	4	1

Q2) Data in table represent number of consumer complaints against major U.S. airlines. If one complaint from table is arbitrarily chosen, determine the probability that it was filed against United Airlines.

Airline	Number of Complaints
United	1172
Northwest	765
Continent	563

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