When using expert opinion, consumer surveys, test marketing, and price experiments to analyze consumer behavior, managers must consider how to isolate the effect of different variables that influence demand

Which of the following would cause both the equilibrium price and equilibrium quantity of potatoes (assume that potatoes are an inferior good) to decrease?

A) a technological advancement that results in a bumper crop of potatoes B) a freeze that sharply reduces potato output C) a decrease in consumer income D) an increase in consumer income

If people begin to generally feel better about the future ________

A) autonomous consumption should rise B) autonomous investment should rise C) the AD curve will shift to the right D) all of the above E) none of the above