The U.S. adult population by age is as follows (The World Almanac, 2009). The data are in

Question:

The U.S. adult population by age is as follows (The World Almanac, 2009). The data are in millions of people.
Age Number
18 to 24 ........29.8
25 to 34 ........40.0
35 to 44 ........43.4
45 to 54 ........43.9
55 to 64 ........32.7
65 and over ......37.8
Assume that a person will be randomly chosen from this population.
a. What is the probability the person is 18 to 24 years old?
b. What is the probability the person is 18 to 34 years old?
c. What is the probability the person is 45 or older?