ASQ
CRE · Question #263
A certain equipment has a MTBF of m = 300 hours. Assuming an exponential distribution of time to failure, what is the maximum time of allowable operation if a reliability of 0.999 is required?
The correct answer is B. 0.3 hours. See the full explanation below for the reasoning.
System Reliability
Question
A certain equipment has a MTBF of m = 300 hours. Assuming an exponential distribution of time to failure, what is the maximum time of allowable operation if a reliability of 0.999 is required?
Options
- A30 hours.
- B0.3 hours.
- C300 hours
- D0.003 hours.
How the community answered
(38 responses)- A13% (5)
- B79% (30)
- C5% (2)
- D3% (1)
Topics
#MTBF#exponential distribution#reliability calculation#mission time
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