The book SuperFreakonomics contains the following text.

A lot of people still drive drunk. In the United States, 30 percent of all fatal crashes involve at least one drunk driver. During the late-night hours, when alcohol use is greatest, that proportion rises to 60 percent.

a. What sample space, Ω, is implied by the text?

b. What two events, D and L, does the text implicitly define on this sample space?

c. Write down the two probability statements the text implies about events D and L.