Final answer:
The question's reference data does not provide a direct percentage of fatal accidents where alcohol was involved. Instead, it refers to driver error and alcohol's influence on it. Statistical analysis is needed to validate the AAA's proportion claim.
Step-by-step explanation:
The question appears to ask about the percentage of fatal accidents involving alcohol consumption by at least one driver. However, the provided references do not precisely answer this specific question but instead provide various statistics related to traffic crashes and alcohol usage. We know that driver error is a leading cause of fatal accidents and can be influenced by alcohol consumption. In reference to the data suggesting that driver error caused 54% of all fatal auto accidents, a study of 30 accidents found 14 were due to driver error. To determine if this proportion is accurate, a statistical test using the significance level (alpha) of 0.05 would be needed. Alcohol intoxication is mentioned as causing a significant number of deaths and impairing driving ability, which can lead to fatal accidents. A Breathalyzer test is used to detect blood alcohol levels, validating the level of intoxication and potential driver error due to alcohol.