a difference exists between the populations being studied.
there are no differences between the populations being studied.
0 out of 5 points
If the percentage of scores falling between the mean and a z score of 0.50 is 19.15,
then what is the percentage of scores falling below a z score of –0.50?
5 out of 5 points
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