Problem
The four-firm concentration ratio for audio equipment makers is 30, and for electric lamp makers it is 89. The HHI for audio equipment makers is 415, and for electric lamp makers it is 2,850. Which of these markets is an example of monopolistic competition?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.