National firearms survey. The Harvard School of Public Health conducted a study of privately held firearm stock in the United States. In a representative household telephone survey of 2,770 adults, 26% reported that they own at least one gun (Injury Prevention, Jan. 2007). Of those that own a gun, 5% own a handgun. Suppose one of the 2,770 adults surveyed is randomly selected.
a. What is the probability that the adult owns at least one gun?
b. What is the probability that the adult owns at least one gun and the gun is a handgun?
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