test statistic A market research team is interested in the public acceptance of a new high-fiber cereal that is to be marketed. the researchers selected a random sample of subjects from one region of the country. The selected subjects were provided with two bowls of cereal. subjects were asked which cereal they preferred. The study was repeated independently in a second region. In the first region, of the 400 subjects, 220 preferred the new cereal; in the second region, 195 of the 300 subjects indicated a preference for the new cereal. What is the value of the test statistic