A researcher asks college students to play a demanding video game while listening to classical music and while listening to hard rock. All of the 10 students in the experiment play the video game for...

A researcher asks college students to play a demanding video game while listening to classical music and while listening to hard rock. All of the 10 students in the experiment play the video game for 15 minutes under each of the music conditions. Half of the students play while listening first to classical music and then to hard rock music; the other half perform with the types of music in the reverse order (see Chapter 7 for information on counterbalancing in a repeated measures design). The dependent variable is the number of correct “hits” in the game over the 15-minute period. The scores for the 10 students are

A Calculate the means for each condition. What trend do you see in the comparison of means?

B Calculate the estimated standard error of the difference scores.

C Find the 95% confidence interval for the difference between the two means in this repeated measures design.

D State a conclusion regarding the effect of type of music on performance given the analysis of these results.