1. (25 pts) There are seven firms in the X industry. Annual sales by firm in millions of dollars are shown below. The X Industry Firm Nudge: $30 Firm Push: $10 Firm Oust: $6 Firm Laugh: $14 Firm Ploy: $12 Firm Mock: $7 Firm Smile: $11 1a. Calculate the 4-firm concentration ratio for the X industry. 1b. Calculate the Herfindahl Index for the X Industry.