A furnace thermostat has a constant failure rate of one failure per 25 months and a mean time to repair of four hours.,

a. What is the thermostat reliability after 12 months? After 24 months? After 36 months?

b. What is the availability?

c. Should a design team try to streamline the repair process to reduce the MTTR? Explain. Does the location of the furnace matter?

d.) Given a reliability target of 99 % ,what combination of mu,p,and time ,t ,values will suffice ? You must do at least two different combinations of p and t