On The Specification of Repair Time Requirements

When specifying maintainability requirements, it is widely accepted practice (virtually universal in US military and DoD specifications) to specify the mean-time-to-repair and a `maximum' quantile of the repair time distribution. This practice is unsatisfactory for the lognormal distribution of...

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Veröffentlicht in:IEEE transactions on reliability 1980-04, Vol.R-29 (1), p.13-16
Hauptverfasser: Emoto, Sherrie E., Schafer, Ray E.
Format: Artikel
Sprache:eng
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Zusammenfassung:When specifying maintainability requirements, it is widely accepted practice (virtually universal in US military and DoD specifications) to specify the mean-time-to-repair and a `maximum' quantile of the repair time distribution. This practice is unsatisfactory for the lognormal distribution of repair times because: 1) As is well-known, it may be that for a given pair (mean, quantile) there is no lognormal distribution. 2) As is not so well-known, for a given pair (mean, quantile) there will be two lognormal distributions, if there are any. In short, the specification of a mean and a quantile does not uniquely determine a single lognormal distribution.
ISSN:0018-9529
1558-1721
DOI:10.1109/TR.1980.5220689