11. Ewing Oil is a privately held firm that specializes in production and distribution of crude oil. Ewing Oil has cash holdings of $500,000 and an available line of credit of $1,000,000. Inspection of the firm's historical financial data indicates an average daily net cash flow of $250,000 with a standard deviation of $800,000. Calculate Ewing Oil's 1 and the probability that the firm will remain liquid.