A ____________ sample is one in which each element in the population has an unknown probability of being selected.

An example of ____________________ politics is when the auto industry was mandated to put seatbelts in all cars. (hint: a small portion of society payed, while many reaped the benefits.)

Fill in the blank(s) with the appropriate word(s).

The largest single category on which state and local funds are spent is

a. public welfare. b. highways. c. natural resources. d. education.