Economic Quality Control
Latest Publications


TOTAL DOCUMENTS

302
(FIVE YEARS 0)

H-INDEX

10
(FIVE YEARS 0)

Published By Walter De Gruyter Gmbh

1869-6147, 0940-5151

2016 ◽  
Vol 31 (2) ◽  
Author(s):  
Gokarna Aryal ◽  
Qiuming Zhang

AbstractIn this article we study a generalization of the Laplace distribution. The generalization is motivated by the recent work of Cordeiro and de Castro [


2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Gadde Srinivasa Rao ◽  
Kanaparthi Rosaiah ◽  
Mothukuri Sridhar Babu ◽  
Devireddy Charanaudaya Sivakumar

AbstractIn this article, acceptance sampling plans are developed for the exponentiated Fréchet distribution based on percentiles when the life test is truncated at a pre-specified time. The minimum sample size necessary to ensure the specified life percentile is obtained under a given customer's risk and producer's risk simultaneously. The operating characteristic values of the sampling plans are presented. One example with real data set is also given as an illustration.


2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Mohammed S. Kotb

AbstractWe suggest a ranked set sample method to improve Bayesian prediction intervals. The paper deals with the Bayesian prediction intervals in the context of an ordered ranked set sample from a certain class of exponential-type distributions. A proper general prior density function is used and the predictive cumulative function is obtained in the two-sample case. The special case of linear exponential distributed observations is considered and completed with numerical results.


2016 ◽  
Vol 31 (2) ◽  
Author(s):  
Amer I. Al-Omari ◽  
Amjad D. Al-Nasser ◽  
Fatima Salem Gogah

AbstractIn this work, we investigate a double acceptance sampling plan (DASP) based on truncated life tests when the lifetime of a product follows the half normal distribution. By fixing the consumer’s confidence level, the minimum sample sizes of the first and second samples needful to assert the specified mean life are calculated. The operating characteristic values and the minimum ratios of the mean life to the specified life are also analyzed. Several important tables are provided and a numerical example is given to illustrate the results.


2016 ◽  
Vol 31 (2) ◽  
Author(s):  
Amer I. Al-Omari

AbstractIn this paper, we propose acceptance sampling plans for transmuted inverse Rayleigh distribution when the lifetime time is truncated at a predetermined level. We consider various characteristics of the acceptance sampling plans such as confidence levels, acceptance numbers, ratio of the experimental time to such a specified average, minimum requisite sample size to affirm a certain mean lifetime assuming transmuted inverse Rayleigh distribution. The minimum sample size, the operating characteristic function values of the new sampling plans as well as the producer’s risk are obtained and the results are illustrated by examples.


2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Manuel Cabral Morais

AbstractWe usually assume that counts of nonconforming items have a binomial distribution with parameters (


2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Mohammad Shafaei Noughabi

AbstractIn this paper, a special case of Schröder's functional equation is solved. Then, the general solution of the equation is utilized to determine the class of distributions by their α-quantile past lifetime function.


2016 ◽  
Vol 31 (2) ◽  
Author(s):  
Idika E. Okorie ◽  
Anthony C. Akpanta ◽  
Johnson Ohakwe

AbstractThis article introduces a new lifetime distribution called the transmuted Erlang-truncated exponential (TETE) distribution. This new distribution generalizes the two parameter Erlang-truncated exponential (ETE) distribution. Closed form expressions for some of its distributional and reliability properties are provided. The method of maximum likelihood estimation was proposed for estimating the parameters of the TETE distribution. The hazard rate function of the TETE distribution can be constant, increasing or decreasing depending on the value of the transmutation parameter


Sign in / Sign up

Export Citation Format

Share Document