15.13 Old Fashion Corp. is an all-equity firm famous for its antique furniture business. If the firm uses 36-percent leverage through issuance of long-term debt, the CFO predicts that there is a 20-percent chance that the ROE will be 10 percent, a 40-percent chance that the ROE will be 15 percent, and a 40-percent chance that the ROE will be 20 percent. The firm is tax exempt.

Explain whether the firm should change its capital structure if the forecast of the CFO changes to 30-percent, 50-percent, and 20-percent chances, respectively, for the three ROE possibilities.