Which of the following is the best example of a research hypothesis?
A) Smoking cigarettes increases the incidence of heart disease.
B) The earth has one moon.
C) Boys and girls differ in athletic ability.
D) There are no gray polar bears.

Question

Quizplus · Accepted Answer

A research hypothesis is 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. "Smoking cigarettes increases the incidence of heart disease" is a good example because it proposes a specific outcome (increase in heart disease) that can be tested through research.

Which of the Following Is the Best Example of a Research