If the mean time between failures for an instrument is 247 days and the mean time
to repair is 3 days, calculate its availability.
Data are collected by a manufacturer about a particular piece of machinery that is
used 24 hours/day, 7 days per week, recording both the intervals in days between
breakdowns and the time taken to repair each fault that causes a breakdown. The
following data are collected:
Times before breakdown ðin daysÞ: 13:3 4:3 12:7 17:8 14:2 20:1 15:6 8:9 8:1 11:5
Time to repair faults ðdaysÞ: 0:8 1:5 0:2 0:7 4:0 0:6 0:9 1:4 0:8 0:1
Calculate the mean time between failures, the mean time to repair, and the
availability of the machine.