The Washington Post (January 30, 2020) reported on a study conducted by the AAA Foundation for Traffic Safety to investigate a possible link between legalization of marijuana and fatal vehicle crashes. In 2013, the state of Washington legalized marijuana for recreational use. Prior to that law, 9% of all drivers involved in a fatal crash tested positive for marijuana. In a sample of 814 drivers involved in a fatal crash in 2017 (five years after the legalization of marijuana), 174 tested positive for marijuana. Is this sufficient evidence to conclude that, after legalization of marijuana, the percentage of Washington drivers involved in a fatal crash who test positive for marijuana exceeds 9%? Test using α = .01.