The Ohio Department of Insurance reaffirmed its approval of Batus Inc.'s acquisition of Farmers Group, the Los Angeles-based insurance holding company. Only Oregon and Kansas have yet to rule on the $5.2-billion deal. . . . Atlanta-based Coca-Cola Enterprises said it has agreed to sell its Coca-Cola Bottling Co. of Mid-America to Johnston Coca-Cola Bottling Group Inc. of Chattanooga, Tenn., for about $285 million . . . State Insurance Commissioner Roxani M. Gillespie said an arbitration panel has awarded more than $90 million in unpaid reinsurance because of insolvent Mission Insurance Co. . . . The Federal Reserve said the average yield for one-year T-bills, the most popular index for making changes in adjustable-rate home mortgages, edged up to 8.13% last week after averaging 8.12% the week before . . . Baker Hughes Inc., Houston, reported that the number of working oil and gas rigs declined to 923, down from 933 a week earlier. A year ago, the count was 1,131.