Q13 The mean time between failures (MTBF) is the reciprocal of the failure rate F a. Q14 If component A has a failure rate = 0.001/day and component B has a failure rate=0.01/month (1 month = 30 days), then MTBF (A) = 1000 days MTBF (B) 1200 days b. MTBF (A) = 1000 days MTBF (B) 3000 days MTBF (A) = 100 days MTBF (B) 1200 days d. MTBF (A) = 100 days MTBF (B) 30 days C. a. Q15 If the mean time to repair (MTTR) for A is 20 days and MTTR for B is 100 days which component has the better system availability (SA) A b. B They are equal d. can't be determined C