Sam Greene noticed an ad for an Internet dating service that claimed more people who used its service are in long-term relationships than people who didn’t. Sam, a good critical thinker, knows this isn’t enough to claim that the service causes people to find long-term love and wants to create an experiment to investigate. Use the following terms to describe an experiment that would support or dispute the ad’s claim.

• Hypothesis

• Random sample

• Random assignment

• Operational definitions

• Independent variable

• Dependent variable

• Inferential statistics