ASQ
CRE · Question #306
A prototype lot of a new design suspension spring underwent testing with these results: - Total hours accumulated: 12,000 - Number of Failures: 6 - Hours to failure: 202, 387, 461, 590, 723, 864…
The correct answer is C. 0.0005/hour. See the full explanation below for the reasoning.
Data Collection and Use
Question
A prototype lot of a new design suspension spring underwent testing with these results:
- Total hours accumulated: 12,000
- Number of Failures: 6
- Hours to failure: 202, 387, 461, 590, 723, 864
What is the failure rate?
Options
- A0.0018/hour
- B0.0024/hour
- C0.0005/hour
- D0.0020/hour
How the community answered
(33 responses)- A15% (5)
- B6% (2)
- C76% (25)
- D3% (1)
Topics
#failure rate#prototype testing#test data analysis#MTBF
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