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.

Question

Quizplus · Accepted Answer

The null hypothesis typically posits no effect or difference, making statement A correct as it suggests that the type of distraction (TV, radio, or none) does not affect math performance. Statements B and C offer plausible alternative hypotheses that distractions could negatively impact performance and that the type of distraction might have varying effects, respectively. Thus, all statements are true in the context of setting up a research experiment to test the impact of distractions on mathematical performance.

An Experiment Is Conducted in Which One Group of Participants