The Market Forces of Supply and Demand 847
130.
If a study by medical researchers finds that eating brown rice causes weight loss while eating
white rice causes
weight gain, then we likely would see
a.
an increase in demand for brown rice and a decrease in demand for white rice.
b.
a decrease in demand for brown rice and an increase in demand for white rice.
c.
an increase in demand for both brown and white rice.
d.
no change in demand for either type of rice because weight loss is not a determinant of
demand.
131.
Which of the following events could shift the demand curve for gasoline to the left?
a.
The income of gasoline buyers rises, and gasoline is a normal good.
b.
The income of gasoline buyers falls, and gasoline is an inferior good.
c.
Public service announcements run on television encourage people to walk or ride bicycles
instead of driving
cars.
d.
The price of gasoline rises.