[EX04-134] The number of people living in the 50 U.S. states and the District of Columbia in September 2004 is reported by age groups in the following table.

Age Group Percentage Number (1000s)
0–17 25% 73,447.7 18–24 10% 28,855.7 25–34 13% 39,892.5 35–49 23% 66,620.3 50 29% 84,119.8 Source: Sales & Marketing Management Survey of Buying Power, September 2004, for the 50 U.S. states and the District of Columbia

a. Verify the percentages reported in the table.
If one person is picked at random from all the people represented in the table, what is the probability of the following events:

b. “Between 18 and 24.” How is this related to the 10% listed on the table?

c. “Older than 17”

d. “Between 18 and 24” and “older than 17”

e. “Between 18 and 24” or “older than 17”

f. “At least 25”
g. “No more than 24”