Problem
A researcher hypothesizes that a new policing strategy involving community meetings designed to educate residents on the importance of self-protective measures will increase the use of such measures. He gathers a sample of local residents and finds out whether they have participated in an educational session (have participated; have not participated). Among each group, he computes the proportion of residents who now take self-protective measures.
1. Identify the independent variable.
2. Identify the level of measurement of the independent variable.
3. Identify the dependent variable.
4. Identify the level of measurement of the dependent variable.
5. What type of inferential analysis should the researcher run to test for a relationship between these two variables?