According to the Air Transport Association of America, the average operating cost of an MD-80 jet airliner is $2.270 per hour. Suppose the operating costs of an MD-BQ jet airliner are normally distributed with a standard deviation of $173 per hour. (Round the volue of z to 2 dedmal places, es. 12.5. Round your answers to 2 decimol ploces es. 125.31.) (a) At what operating cost woudd only 20% of the operating costs be less? (b) At what operating cost would 6576 of the operating costs be more? (c) What operating cost would be more than BSic of operatineconts?.
According to the Air Transport Association of America, the average operating cost of an MD-80 jet airliner is $2.270 per hour. Suppose the operating costs of an MD-BQ jet airliner are normally distributed with a standard deviation of $173 per hour. (Round the volue of z to 2 dedmal places, es. 12.5. Round your answers to 2 decimol ploces es. 125.31.) (a) At what operating cost woudd only 20% of the operating costs be less? (b) At what operating cost would 6576 of the operating costs be more? (c) What operating cost would be more than BSic of operatineconts?.