Dog behavior on walks. Researchers at the School of Veterinary Science, University of Liverpool (United Kingdom), conducted a field study to investigate the frequency and nature of interactions of pet dogs with other dogs ( Applied Animal Behaviour Science , June 2010). The behavior of pet dogs being walked by their owners was observed at several popular dog-walking areas. When a pet dog encountered one or more other dogs on the walk, the length of the interaction was recorded (in seconds). The interaction episodes were classified into three groups according to the number of dogs encountered (1 dog, 2 dogs, or at least 3 dogs). The researchers compared the distributions of the interaction lengths for the three groups using the Kruskal Wallis H -test. a. Set up the null and alternative hypotheses for the test. b. At a = .05, what is the rejection region? c. The test statistic was reported as H = 1.1, with an associated p -value of .60. What conclusion can you draw from these results?