Question

What percentage of railroad crossing crashes result from a vehicle driving into the side of a train?

Answer 1

The student's question involves using statistical methods to examine the proportion of auto accidents due to driver error and testing the accuracy of the AAA's claim with significance testing.

Step-by-step explanation:

The question relates to the examination of a proportion of traffic accidents due to driver error and the statistical methods to determine if the American Automobile Association (AAA) proportion is accurate. When evaluating the AAA's claim that driver error causes 54% of all fatal auto accidents, a sample of 30 fatal accidents indicated that 14 were due to driver error. To perform this analysis, a hypothesis test for proportion needs to be conducted using the significance level (α) of 0.05.

Answer 2

The percentage of railroad crossing crashes that results from a vehicle driving into the side of a train is 25%.
These crashes usually occur as the result of drivers intentionally circumventing warning equipment used at railroad crossings. Drivers typically used their senses to determine the proximity of the train and attempt to cross quickly rather than wait for the train to pass before crossing.