Harvey is interested in doing a study to determine whether a relationship exists between participating in college athletics and self-efficacy for academic work. because harvey is not interested in determining a cause-and-effect relationship, he would be best advised to do a(n) .

Correlational study.

Explanation:

There are many types of studies when doing research. One of this types of studies is the correlational study.

A correlational study is a type of study where the researcher wants to see if two or more variables are related and in what way they are related. In this study we're not interested in figuring out if there's a cause-and-effect relationship but only if the variables have some kind of relationship.

In this example, Harvey wants to determine if a relationship exists between participating in college athletics and self-efficacy for academic work. We can see that he wants to see if there is a relationship between these two variables (and not necessarily wanting to know if one is the cause of the other one). Therefore, he would be best advised to do a correlational study.

the density would be a smaller number.