The World Factbook, 2004, reports that U.S.

airports have the following number of meters of runways that are either paved or unpaved.

Number of Airports Total Runway (meters) Paved Unpaved More than 3047 188 1 2438–3047 221 7 1524–2437 1375 160 914–1523 2383 1718 Less than 914 961 7843 Total 5128 9729 Source: The World Factbook, January 2004, http://www.cia.gov/cia/

publications/factbook/geos/us.html#People If one of these airports is selected at random for inspection, what is the probability that it will have the following:

a. Paved runways

b. 914 to 2437 meters of runway

c. Less than 1524 meters of runway and unpaved

d. More than 2437 meters of runway and paved

e. Paved runway, given that it has more than 1523 meters of runway

f. Unpaved, knowing that it has less than 1524 meters of runway g. Less than 1524 meters of runway, given that it is unpaved