Which of the Following Statements Is Considered a Null Hypothesis

Multiple Choice

Which of the following statements is considered a null hypothesis?

A) The children who watch more than 2 hours of TV have the same weight gain as children who watch TV less than 2 hours.
B) Smoking is related to poorer health status.
C) There is a greater amount of fatigue in health-care professionals in urban areas.
D) Increases in activity are associated with decreases in cognition.