Dr. Brown wanted to observe the effects of music genre on surgical recovery time. Dr. Brown set up an experiment in which participants were randomly assigned to listen to one of three different genres of music (rap, metal, or country). Participants were patients who had just received liposuction; they listened to their assigned music genre for 2 hours each day until discharged from the hospital. Dr. Brown recorded the number of days the patients remained in the hospital. His results are shown below.

Rap	Metal	Country
4	1	2
4	1	2
3	2	3
3	1	2

Using the data shown above, Dr. Brown obtained the following results from SPSS:

ANOVA Days ToRecover Sum of Squares df Mean Square F Sig Between Groups 10.167 2 5.083 18.300 <.001 within groups total>