Imagine you are interested in training for your first marathon and want to determine whether the finishing time of non-elite marathon runners depends on the type of training program used. There are three training programs you are interested in comparing: Hal Higdon's, Jeff Galloway's, and Art Liberman's. You are able to track down 30 runners, 10 who have done each of the training programs. You ask the runners for their marathon finishing times. What statistic should you use to analyze your data