Accession Number : AD0774537

Title :   Statistical Treatment of Certain Life Testing and Reliability Problems.

Descriptive Note : Final rept.,

Corporate Author : NEW YORK UNIV BRONX

Personal Author(s) : Dubey,Satya D.

Report Date : DEC 1973

Pagination or Media Count : 75

Abstract : In section 1 a number of problems relating to the ratio based on the expected length of time needed to observe the first r failures out of n items placed on the test (1 < or = r < or = n) and the expected length of time needed to observe all r failures of the sample placed on the test for various distributions (exponential, Weibull, uniform, Gamma, logistic, Pareto, Cauchy) are considered. In section 2 several interesting and useful properties of the Compound Weibull and related distributions are investigated. In section 3 power functions are derived for the Kumar-Patel test which are based on right censored samples for testing the equality of location parameters of two exponential distributions when their common scale parameter is unknown. In section 4 conditions under which a sequence of inequalities are valid are established, and some allied problems are discussed. (Modified author abstract)

Descriptors :   *Reliability, *Life tests, *Statistical analysis, Failure, Statistical tests, Distribution functions, Sampling, Theorems

Subject Categories : Statistics and Probability
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE