4. Recall that an observational study can be used to prove a correlation. Think of an observational study that you have learned about, or make up your own example. a. Give a sample question or hypothesis for this observational study. (5 points)

b. What are the variables in your study? (5 points)

c. Describe an observation that you might make in such a study. (5 points)
PLEASE HELP WILL GIVE BRAINLIEST