STATA DATA

Please use the difference of means tests to answer the following questions by comparing the following outcomes amongst the specified groups. Present your Null and Alternative hypothesis formally, and then give the p-values and state whether the Null is rejected, or if you fail to reject the null.

1. Are homicide rates different in states with higher than median divorce rates (Hint: two groups are 1. States with lower than median divorce rates, 2. States with higher than median divorce rates.)

Explain using a path-diagram the model (causal? correlative?) that this correlation might be used to add supporting evidence of.

2. Are homicide rates higher in states with higher than median divorce rates (Hint: two groups are 1. States with lower than median divorce rates, 2. States with higher than median divorce rates.)

3. Are animal concerns higher for older individuals? (Hint: two groups are 1. People with lower than median age, 1. People with higher than median age.)

4. Are countries with higher numbers of Non-Government Organizations (NGOs) really more likely to enact an environmental treaty?

You'll include the output for your tests, and the line of code that generated the hypothesis test output in your solutions.