Managerial Economics & Business Strategy 8th Edition by Michael Baye,Jeff Prince

Exercise 21

Nationwide Bank has approached Hometown Bank with a proposal to merge. The following table lists the sales of the banks in the area. Use this information to calculate the four-firm concentration ratio and the Herfindahl-Hirschman index. Based on the FTC and DOJ Horizontal Merger Guidelines, do you think the Justice Department is likely to challenge the proposed merger?