A physiologist has conducted an experiment to evaluate the…
A physiologist has conducted an experiment to evaluate the effect of Hormone X on aggressive behavior. Ten rats were injected with Hormone X, while ten other rates received a placebo injection. The number of aggressive attacks (fights) were counted over a 45 minute period. The following results were obtained: Group 1 Group 2 Hormone X Placebo 8 7 5 8 10 9 6 6 12 8 3 5 6 7 4 4 6 11 7 8 Should the physiologist use an independent t-Test or a related samples t-Test? Explain your answer. What are the independent and dependent variables? What are Ho and Ha ? Calculate tobt Using