In a study of high school students at least 16 years of age, researchers obtained the survey results summarized in the table below (based on data from "Texting While Driving and Other Risk Motor Vehicle Behaviors Among U.S. High School Students" by O'Malley, Shults, and Eaton, Pediatrics,Vol. 131, No.6).

	Irregular Seat Belt Use?
	Yes	No
Texted While Driving	1737	2048
Did not Text While Driving	1945	2775

• State the null and alternative hypotheses.