Joan wants to investigate whether the time a person spends in a store is affected by the genre of background music being played. She gathers a random sample of 18 individuals and randomly assigns them to shop in the store while listening to either classical, jazz, or rock music - an equal number of participants were in each condition. She then records how long each shopper spends in the store in minutes and compares the duration across the three conditions. She finds that the mean time spent in the store for each group are MClassical = 22 minutes, MJazz = 24 minutes, and MRock = 16 minutes. She was in the process of analyzing her data, summarized in the table below: (10 pts )

SS df MS F Between Within Total 400