Use the following to answer questions
Study Description: Dance Dance Revolution
Unnithan, Houser, and Fernhall (2006) were interested in whether playing the game Dance Dance Revolution (DDR) affected the heart rate of overweight adolescents differently than it affected non-overweight adolescents.Twenty-two adolescents, 10 classified as overweight and 12 as not overweight, played DDR for 12 minutes, while the researchers measured each participant's heart rate.On average, the researchers found no difference between the heart rate of the two groups.
-(Study Description: Dance Dance Revolution) Which statement is the null hypothesis for this study?
A) There will be no difference in the heart rate of the two groups after playing Dance Dance Revolution.
B) The heart rate of the overweight group will be faster than that of the non-overweight group after both groups play Dance Dance Revolution.
C) The heart rate of the non-overweight group will be faster than that of the overweight group after both groups play Dance Dance Revolution.
D) The heart rates of the overweight group and the non-overweight group will differ after both groups play Dance Dance Revolution.

Question

Use the following to answer questions 
Study Description: Dance Dance Revolution
Unnithan, Houser, and Fernhall (2006) were interested in whether playing the game Dance Dance Revolution (DDR) affected the heart rate of overweight adolescents differently than it affected non-overweight adolescents.Twenty-two adolescents, 10 classified as overweight and 12 as not overweight, played DDR for 12 minutes, while the researchers measured each participant's heart rate.On average, the researchers found no difference between the heart rate of the two groups.
-(Study Description: Dance Dance Revolution) Which statement is the null hypothesis for this study?
A) There will be no difference in the heart rate of the two groups after playing Dance Dance Revolution.
B) The heart rate of the overweight group will be faster than that of the non-overweight group after both groups play Dance Dance Revolution.
C) The heart rate of the non-overweight group will be faster than that of the overweight group after both groups play Dance Dance Revolution.
D) The heart rates of the overweight group and the non-overweight group will differ after both groups play Dance Dance Revolution.

Quizplus · Accepted Answer

The null hypothesis for this study is that there will be no difference in the heart rate of the two groups after playing Dance Dance Revolution. This is the hypothesis that the researchers are trying to disprove or reject, as they are interested in whether playing DDR affects the heart rate of overweight adolescents differently than it affects non-overweight adolescents. Therefore, option A is the correct answer.

Use the Following to Answer Questions