The following table represents the market share percentage for each firm in a hypothetical industry. a. Calculate the four-firm concentration ratio for this industry. b. Calculate the...

a. Calculate the four-firm concentration ratio for this industry.

b. Calculate the Herfindahl-Hirschman Index (HHI) for this industry.

c. Would the Justice Department consider this industry as un-concentrated, moderately concentrated, or concentrated? Why?

d. Suppose firms E and G wanted to merge. What would be the value of the HHI following this merger? Would the Justice Department most likely challenge this merger? Why or why not?