When male mice are grouped, one of them usually becomes dominant over the others. In order to see how a parasitic infection might affect the competition for dominance, male mice were housed in groups, three mice to a cage; two mice in each cage received a mild dose of the parasitic worm H. polygyrus. Two weeks later, criteria such as the relative absence of tail wounds were used to identify the dominant mouse in each cage. It was found that the uninfected mouse had become dominant in 15 of 30 cages.41 Is this evidence that the parasitic infection tends to inhibit the development of dominant behavior? Use a goodness-of-fit test against a directional alternative. Let a = 0.05.