A psychologist investigating the connection between music and memory, randomly assigns subjects to one of three treatment

Question:

A psychologist investigating the connection between music and memory, randomly assigns subjects to one of three treatment groups. The first group hears white noise, the second Mozart, and the third heavy metal. With the appropriate background sound turned on, subjects visually study a picture. The picture is removed, the sound turned off, and then the subjects are asked to answer a questionnaire concerning the image. Suppose the number of wrong answers result in the following ANOVA table