QUESTION 1 A researcher is interested in studying the effects of using school police and metal detectors on students' feelings of safety in school. Three schools of roughly the same size, racial composition, income levels, and disciplinary problems are identied. The researcher randomly assigns the type of security to each school and implements it for the beginning of the school year. School A receives no change in security, School B receives metal detectors, and School C receives metal detectors and school police. The researcher randomly samples 8 classes from each school, and administers a fear of crime survey to the students after the security is implemented. The data below represent the number of students from each class who score high on the fear of crime scale. School A School B School C a) State the null hypothesis. b) Complete an ANOVA to test the null hypothesis. c) What can we conclude