Final answer:
The statement is FALSE as hands-free device usage while driving is typically legal, but specific laws can vary by location. Legalities surrounding cell phone use can affect statistics in studies related to driving violations.
Step-by-step explanation:
The statement suggesting it is illegal for anyone to talk on the phone using a hands-free device while driving unless under age 19 is FALSE. While laws vary by jurisdiction, this statement is a generalization and is not universally true. In fact, many places allow the use of hands-free devices while driving, regardless of age. For those studying traffic violations and cell phone usage, it is important to note that these rules can impact the statistics. For example, in a hypothetical study about speeding violations and drivers who use cell phones, the data might reflect different patterns of behavior based on the legality of cell phone use while driving. If the null hypothesis, stating that being a cell phone user while driving and receiving a speeding violation are independent events, is to be tested, one would expect certain outcomes such as 28 people using cell phones while driving and receiving a speeding violation if the null hypothesis were true.