If À = 1x10^-6 per hour 1. Calculate the MTBFs in years. 2. Calculate the reliability for one year (R(1yr)). 3. If the MDT =10hrs, calculate the unavailability. 4. If the MTTR=1hr, the failures are dormant, and the inspection interval is 6 months, calculate the unavailability. 5. What is the effect of doubling the MTTR? 6. What is the effect of doubling the inspection interval?

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