Which of the following statements are positive and which are normative? Why?
a. The U.S. government should eliminate the estate tax.
b. The income tax causes people to work less.
c. Public education improves the well-being of the average citizen.
d. Exercise lowers the risk of heart disease.
e. Exercise is good for you.
f. Most people would choose pizza over tacos.
g. Most people are better off with pizza than with tacos.