Which one of these statements is NOT an example of a straw-man null hypotheses? Families with cars have the same access to healthcare providers as families without cars. Cats and dogs differ in their interest in human relationships. Students who do their homework regularly get better grades or the same grades as students who do not. There is no difference in the number of doctor visits per year for people who wash their hands more than three times a compared to those who wash their hands three times or less a day.