A hospital admitting station records an average of 20 peices of information per patient. In one day an administrator found 25 errors in the information recorded for the 1100 patients admitted. The defect rate expressed in ppm(parts per million) is:



A hospital admitting station records an average of 20 peices of information per patient. In one day an administrator found 25 errors in the information recorded for the 1100 patients admitted. The defect rate expressed in ppm(parts per million) is: and they say 1137?