Show the effect of each of the following events on the market for coffee by stating 1) if the equilibrium price went up, down, or stayed the same and 2) if the equilibrium quantity went up, down, or stayed the same:
a) A new study finds that coffee is good for the heart, reducing cholesterol if consumed daily.
b) The price of tea decreases substantially – assume that tea is a substitute for coffee.
c) Wages increase substantially in countries that grow coffee beans.
d) A fertilizer that increases the yield per acre of coffee beans is discovered.
e) A tropical storm destroys a large percentage of the Columbian coffee bean crop, a major source of coffee for the U.S. market.