A researcher wants to know whether a community's high school graduation rate is positively associated with the rate of juvenile delinquency in that community. She collects data on these two variables from 20 communities around the US.

1.What kind of research design is this? ___________________ (1 extra pt)

Note:If it's an experimental or quasi-experimental design, you must also identify whether it's a between or within-subjects design.

2a.What is Variable 1? _____________ (1 pt)

2b.What is its scale of measurement?______________ (1 pt)

3a.What is Variable 2? ______________(1 pt)

3b.What is its scale of measurement? ____________ (1 pt).

4.aWhat is the null hypothesis? __________________________________________(1pt)

4b. What is alternate hypothesis 1? __________________________________________(1 pt)

4c. What is alternate hypothesis 2? __________________________________________ (1 pt)

5.What statistical test do you need to run to test your hypothesis? (2 pts)

B.Researchers wanted to know if seniors who received Medicaid would be in better health than those who did not have health insurance.A group of seniors who were not currently receiving health insurance were randomly assigned to one of two conditions. Either they were enrolled in Medicaid or they did not receive any health insurance. After three months, all seniors had a comprehensive physical by a doctor. As part of this physical, their cholesterol levels were assessed. Researchers than compared the cholesterol levels in both groups.

1.What kind of research design is this? ___________________ (1 extra pt)

Note:If it's an experimental or quasi-experimental design, you must also identify whether it's a between or within-subjects design.

2a.What is Variable 1? _____________(1 pt)

2b.What is its scale of measurement?______________ (1 pt)

3a.What is Variable 2? ______________(1 pt)

3b.What is its scale of measurement? ____________ (1 pt).

4a. What is the null hypothesis? _____________________________________________(1pt)

4b. What is alternate hypothesis 1? __________________________________________(1 pt)

4c. What is alternate hypothesis 2? __________________________________________ (1 pt)

5.What statistical test do you need to run to test your hypothesis? (2 pts)

C.A researcher wanted to know if how much people liked rated celebrities was related to the celebrity's level of narcissism.They assessed the level of narcissism in 20 celebrities on a scale of 1 -5 and had people rate how much they liked the celebrity on a scale of 1-5.

1.What kind of research design is this? ___________________ (1 extra pt)

Note:If it's an experimental or quasi-experimental design, you must also identify whether it's a between or within-subjects design.

2a.What is Variable 1? _____________(1 pt)

2b.What is its scale of measurement?______________ (1 pt)

3a.What is Variable 2? ______________(1 pt)

3b.What is its scale of measurement? ____________ (1 pt).

4a. What is the null hypothesis? _____________________________________________(1pt)

4b. What is alternate hypothesis 1? __________________________________________

4c. What is alternate hypothesis 2? __________________________________________

5.What statistical test do you need to run to test your hypothesis? (2 pts)