0.645 0.855 0.80D 0.999 0.645 c. Assume that the system still costs $600 to fix every time it breaks down, and you are going to run the system 1000 times. You are considering improving your system. You have contacted a backup supplier of component 1. She tells you that the backup for component I will cost $50,000. What would the minimum reliability of the backup need to be to make the purchase worthwhile? (keep 4 decimals for 0.855 0.80D 0.999 intermediate calculations) a. What is the reliability of the system? (Round to 4 decimals) b. If the system costs $600 to fix every time it breaks down, what is the expected fixing cost if the system runs for 1000 times