Problem

National Firearms Survey. Refer to the Harvard School of Public Health study of privately...

National Firearms Survey. Refer to the Harvard School of Public Health study of privately held firearm stock in the United States, presented in Exercise 2.6 (p. 34). Recall that in a representative household telephone survey of 2,770 adults, 26% reported that they owned at least one gun. (Injury Prevention, Jan. 2007.) The accompanying pie chart summarizes the types of firearms owned by those who own at least one gun. Suppose 1 of the 2,770 adults surveyed is randomly selected.

a. What is the probability that the adult owns at least one gun?
b. Given that the adult does own at least one gun, what is the probability that the adult owns a revolver?
c. What is the probability that the adult owns at least one gun and the gun is a handgun?
Source: Hepburn, M., Miller, D. A., and Hemenway, D. “The US gun stock: Results from the 2004 national firearms survey,” injury Prevention, Vol. 13, No. 1, Jan. 2007 (Figure 1).