Final answer:
To assess the risk of traffic crashes, one can analyze the proportion of driver dummies with head injuries in crash tests, statistics on fatal crashes, and risky driving behaviors such as cell phone use while driving.
Step-by-step explanation:
Assessing the risk of being involved in a traffic crash can be determined by analyzing various factors such as the proportion of dummies that would suffer head injuries in crash tests, statistics on fatal motor vehicle crashes, and specific behaviors like the use of cell phones while driving.
In an experiment where cars with dummies crashed into a wall at 35 miles per hour, the data collected can show the proportion of driver dummies that would have had head injuries if they were real people. A simple random sample of 75 cars is used to start this determination.
Moreover, data on risky driving behavior—like cell phone use or prior violations—can influence the probability of crashes. Reference to specific findings, such as those by Thompson et al. (2007) regarding the risky driving of individuals with childhood ADHD, can provide additional insights into factors that contribute to the likelihood of traffic crashes.