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Review of Standards and Specifications: MIL-STD-781 and Confidence Levels

Summary: Various examples illustrate how to obtain confidence limits on the mean time between failures (MTBF) of an exponential distribution from data obtained from one of the fixed-size or sequential test plans of MIL-STD-781C. For fixed-length tests, the methods by B. Epstein and the modifications of H.L. Harter are briefly discussed. For the sequential tests simple charts for newly developed methods of Bryant and Schmee are given.

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  • Topics:
  • Keywords: Confidence intervals,Fixed-effects model,Sequential methods
  • Author: Schmee, Josef; Godfrey, A. Blanton (edited by)
  • Journal: Journal of Quality Technology