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Sample Size Determination for Estimation of Guarantee Times
Author(s) -
Desu M. M.,
Narula Subhash C.,
Villarreal Bernardo
Publication year - 1976
Publication title -
journal of the royal statistical society: series c (applied statistics)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.205
H-Index - 72
eISSN - 1467-9876
pISSN - 0035-9254
DOI - 10.2307/2347235
Subject(s) - estimation , sample (material) , statistics , sample size determination , computer science , mathematics , economics , chromatography , chemistry , management
Summary The problem of estimating the guarantee time of a two‐parameter exponential distribution is considered. The number of observations needed, such that an estimator satisfies a specification, is determined. When the failure rate is unknown, a two‐stage estimation procedure similar to Stein's (1945) procedure, is considered. A method for choosing the first‐stage sample is given. The problem of estimating the difference between two guarantee times is also considered.