Final answer:
Crashes in work zones are usually due to driver error, with additional factors like speeding and cell phone use also contributing. Accurate determination of AAA's proportion requires a statistical test. Local data showing a high frequency of accidents may necessitate safety interventions.
Step-by-step explanation:
Crashes in work zones are most commonly the result of driver error. According to statistics, driver error accounts for a significant portion of all fatal accidents. For example, the American Automobile Association notes that approximately 54 percent of all fatal auto accidents can be attributed to driver error. A study involving 30 randomly selected fatal accidents found that 14 were due to driver error. When performing a statistical test with α = 0.05 to determine if the AAA proportion is accurate, researchers would typically use a hypothesis test for proportions to compare the sample proportion to the claimed proportion. However, without the complete details on how to conduct such a test, one cannot definitively conclude whether the AAA proportion is accurate based on the presented data.
Additionally, factors such as speeding violations and use of cell phones while driving also contribute to crashes. A fictional study has noted a correlation between these factors and increased instances of driving violations. Finally, a high frequency of accidents at an intersection, like the one mentioned in the police reports, can signify the necessity for traffic signals or other safety measures due to the elevated risk they represent. These accidents are alarming, especially when they result in loss of life, further emphasizing the importance of driving safety and adherence to rules in work zones and other high-risk areas.