Previous research suggests that there is a relationship between income and self-esteem. You want to test this relationship in a sample of social workers. You follow the required steps in the hypothesis testing process and write the following: ""There is no relationship between income and self-esteem among social workers."" Which type of hypothesis is this?

A specific, clear, and testable proposition or predictive statement about the possible outcome of a scientific research study based on a particular property of a population, such as presumed differences between groups on a particular variable or relationships between variables is known as a research hypothesis .

One of the most important steps in planning a scientific quantitative research study is specifying the research hypotheses. A prior expectation about the results of the study in one or more research hypotheses is usually being stated by a quantitative researcher before conducting the study, because the design of the research study and the planned research design is often determined by the stated hypotheses.

In the question, it is clearly seen that a prior expectation about the results of the study on the relationship between income and self-esteem was already suggested, before been tested. Thus, it is a research hypothesis