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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
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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