# Statistics - Probability

Mean time between failures (MTBF) of 1200 operating hours. A mechanic wishes to know, "What is the probability that a particular engine may actually reach 1950 operating hours before failing?" As the quality engineer with responsibility for this particular part, what do you calculate for the answer to the question?

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Average rate of failure = 1/MTBF = 1/1200

Exponential ...

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