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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)
  • A
    13% (5)
  • B
    79% (30)
  • C
    5% (2)
  • D
    3% (1)

Topics

#MTBF#exponential distribution#reliability calculation#mission time

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