Final answer:
The actual percentages of teen fatalities from single-car crashes and those due to driver error are unclear, but by performing a statistical test and looking at the average daily fatalities, we can infer the correctness of AAA's claim and the likelihood of teen deaths per day.
Step-by-step explanation:
The fatality rate for teens in the U.S. from single-car crashes and the percentage attributable to driver error are not specified in the provided information. However, using the provided reference, a statistical test can be conducted to determine if the American Automobile Association's (AAA) reported proportion of 54% of all fatal auto accidents caused by driver error is accurate. In a sample of 30 fatal accidents, if 14 were caused by driver error, we can perform a hypothesis test at the alpha level of 0.05 to accept or reject the claim. Additionally, based on the average number of eight teens dying from motor vehicle injuries per day, it would be unlikely that there will be more than 20 teens killed on any given day, but a numerical justification through probability calculations would be necessary to support the claim.