An Experiment Is Conducted in Which One Group of Participants

Multiple Choice

An experiment is conducted in which one group of participants is asked to perform maths tasks while watching television, a second group of participants is asked to perform maths tasks while listening to the radio, and a third group of participants is asked to perform math tasks while doing nothing else.Which of the following statements is true?

A) The null hypothesis in this study is that the nature of distraction has no impact on mathematical performance.
B) A plausible alternative hypothesis in this study is that distraction has an adverse impact on mathematical performance.
C) A plausible alternative hypothesis in this study is that being distracted by television has more of an adverse impact on mathematical performance than being disracted by radio.
D) Both (b) and (c) .
E) All of the above.