Data were collected from a sample of 220 patients concerning whether or not they had a certain condition and results from a blood test for the condition. Rows: Health status Columns: Blood test results Positive Negative Total Sick 20 5 25 Healthy 10 185 195 Total 30 190 220 Given the contingency table above, what proportion of people who tested positive were actually healthy? Round your final answer to 3 decimal places