ASQ
CRE · Question #329
A component fails on the average of once every 4 years with 75% of the failures observed to occur during stormy weather. If there are 12 hours of stormy whether to every 240 hours of good weather…
The correct answer is A. (stormy) = 3.938, (good) = 0.0656 failures/yr. See the full explanation below for the reasoning.
Data Collection and Use
Question
A component fails on the average of once every 4 years with 75% of the failures observed to occur during stormy weather. If there are 12 hours of stormy whether to every 240 hours of good weather, what are the failure rates for stormy and good weather respectively?
Options
- A(stormy) = 3.938, (good) = 0.0656 failures/yr
- B(stormy) = 4.202, (good) = 0.0525 failures/yr
- C(stormy) = 6.594, (good) = 0.0458 failures/yr
- D(stormy) = 4.000, (good) = 0.0655 failures/yr
How the community answered
(27 responses)- A85% (23)
- B7% (2)
- C4% (1)
- D4% (1)
Topics
#conditional failure rate#failure rate calculation#environmental conditions#Poisson process
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