Question

You want to see if violent videos games have any effect on aggression for middle school boys. So, you get a sample of 50 middle school boys, you have them play a violent video game for one hour, then you measure their aggression as you watch them on the playground for one hour and record the number of pushes, shoves, kicks, or punches they do to other children. A week later, you repeat the entire procedure, but this time the video game they play is a nonviolent one. You want to compare their aggression scores from the day that they played the violent video game to their aggression scores from the day they played the nonviolent game. What kind of hypothesis test do you think would be appropriate for this study? Group of answer choices A) One-Sample t-test B) Independent-Samples t-test C) One-Sample z-test D) Related-Samples t-test

          You want to see if violent videos games have any effect on aggression for middle school boys.  So, you get a sample of 50 middle school boys, you have them play a violent video game for one hour, then you measure their aggression as you watch them on the playground for one hour and record the number of pushes, shoves, kicks, or punches they do to other children.  A week later, you repeat the entire procedure, but this time the video game they play is a nonviolent one.  You want to compare their aggression scores from the day that they played the violent video game to their aggression scores from the day they played the nonviolent game.  What kind of hypothesis test do you think would be appropriate for this study? Group of answer choices  

A) One-Sample t-test  
B) Independent-Samples t-test  
C) One-Sample z-test  
D) Related-Samples t-test

Added by Alicia A.

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