ASQ
CRE · Question #322
CRE Question #322: Real Exam Question with Answer & Explanation
The correct answer is B. 22 hours.. See the full explanation below for the reasoning.
Question
A reliability test was terminated after 171 hours based upon a pre-established plan. An estimate of mean-time-to-failure of 57 hours was obtained. The lower 95 percent confidence bound on the true population mean-time-to-failure is:
Options
- A125 hours.
- B22 hours.
- C27 hours.
- D11 hours.
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