Question: Q 6 . A machine used in a process has an MTBF of 4 0 0 hours and an MTTR of 8 hours. Calculate its

Q6.
A machine used in a process has an MTBF of 400 hours and an MTTR of 8 hours. Calculate its availability.
The target availability is to be 99.9% to meet demands. If the machine's availability is less than this value, then an option is to add identical machines as stand-by. How many additional machines would be needed to meet the target availability? Justify your answer.
The cost of the machine is 350,000 and the downtime time cost of the proces is 5000 per hour. For this new stand-by arrangement, what is the payback period?
Q6. A machine used in a process has an MTBF of

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