In the metro area there are four major supermarketchains. To determine if there

In the metro area there are four major supermarketchains. To determine if there was a difference between thesestores regarding their pricing of food a consumer group did atest. In the Eastgate area of town each of the supermarket chainshas a store. Twenty-five common household items were selected forthe test. These items were purchased at each of the four stores andthe prices were compared. To analyze this data what would be thebest statistical test to use?