You recently collected data for a semi-annual study about exposure to workplace noise exposure for adults from an audiology clinical file at the corporate occupational medicine clinic. You have 1347 files, one for each employee working in an area with an exposure to ambient noise exceeding the OSHA threshold of 8-hour time-weighted average sound level (TWA) of 85 decibels. The data are: sex Age Group Number of days above TWA Male (n=1026) 20-29 years (n=220) 120 days (n=978) You randomly select one file. What is the probability of selecting a female's file