IMathAS-libretexts

Data were collected in order to determine whether there is a relationship between a person's level of education and whether or not the person is a smoker.

What is the null hypothesis in this case?

The more educated a person is, the less likely he or she is to smoke.
Whether a person is a smoker or not is not related to his or her level of education.
There is no difference between the smoking rates of those who have a bachelor's degree or higher and those who do not have a high school diploma.
Whether a person is a smoker or not is related to his or her level of education.

What is the alternative hypothesis in this case?

The more educated a person is, the less likely he or she is to smoke.
Whether a person is a smoker or not is not related to his or her level of education.
There is no difference between the smoking rates of those who have a bachelor's degree or higher and those who do not have a high school diploma.
Whether a person is a smoker or not is related to his or her level of education.