Non Parametric Test for Testing Exponentiality Against Exponential Better Than Used in Laplace Transform Order

2019 ◽  
Vol 8 (1) ◽  
pp. 1-9
Author(s):  
Mohamed A. W. Mahmoud ◽  
Mahmoud M. M. Mansour
2001 ◽  
Vol 38 (03) ◽  
pp. 747-753 ◽  
Author(s):  
Félix Belzunce ◽  
Eva M. Ortega ◽  
José M. Ruiz

In this paper we provide new results about stochastic comparisons of the excess lifetime at different times of a renewal process when the interarrival times belong to several ageing classes. We also provide a preservation result for the new better than used in the Laplace transform order ageing class for series systems.


2018 ◽  
Vol 47 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Rashad Mohamed El-Sagheer ◽  
Mohamed A. W. Mahmoud ◽  
Walid B. H. Etman

In this paper, moment inequalities for the new better than renwal used in Laplace transform order ( NBRUL ) class of ageing distributions are derived. This inequalities demonstrate that if the mean life is finite, then all higher order moments exist. A new test for exponentiality versus NBRUL can be constructed using thes inequalities. Pitman's asymptotic efficiencies and critical values of the proposed test are calculated and tabulated. The powers of this test are estimated for some famously alternatives distributions in reliability such as Linear failure rate,Weibull and gamma distributions. Finally, examples in different areas are used as a practical applications of the proposed test.


2001 ◽  
Vol 38 (3) ◽  
pp. 747-753 ◽  
Author(s):  
Félix Belzunce ◽  
Eva M. Ortega ◽  
José M. Ruiz

In this paper we provide new results about stochastic comparisons of the excess lifetime at different times of a renewal process when the interarrival times belong to several ageing classes. We also provide a preservation result for the new better than used in the Laplace transform order ageing class for series systems.


2016 ◽  
Vol 5 (2) ◽  
pp. 279-285
Author(s):  
M. A. W. Mahmoud ◽  
Rashad M. EL-Sagheer ◽  
Walid B. H. Etman

2019 ◽  
Vol 27 (1) ◽  
Author(s):  
M. A. W. Mahmoud ◽  
L. S. Diab ◽  
D. M. Radi

AbstractIn this paper, a new class of life distribution is proposed, named renewal new better than used in Laplace transform order (RNBUL). The test statistic for testing exponentiality versus (RNBUL) based on U-statistic is proposed. Pitman’s asymptotic efficiencies of the test and Pitman’s asymptotic relative efficiencies (PARE) are calculated. The percentiles of this test statistic are tabulated, and the powers of this test are estimated for some famous alternatives distributions in reliability such as Weibull, linear failure rate (LFR), and Gamma distributions. The problem regarding the right-censored data is also handled. Finally, some applications to elucidate the usefulness of the proposed test in reliability analysis are discussed.


Author(s):  
Judith H. Parkinson-Schwarz ◽  
Arne C. Bathke

AbstractIn this paper, we propose a new non-parametric test for equality of distributions. The test is based on the recently introduced measure of (niche) overlap and its rank-based estimator. As the estimator makes only one basic assumption on the underlying distribution, namely continuity, the test is universal applicable in contrast to many tests that are restricted to only specific scenarios. By construction, the new test is capable of detecting differences in location and scale. It thus complements the large class of rank-based tests that are constructed based on the non-parametric relative effect. In simulations this new test procedure obtained higher power and lower type I error compared to two common tests in several settings. The new procedure shows overall good performance. Together with its simplicity, this test can be used broadly.


2018 ◽  
Vol 9 (5) ◽  
pp. 33
Author(s):  
Yasuo Ishii ◽  
Daisuke Takeyasu ◽  
Tatsuya Oyanagi ◽  
Kazuhiro Takeyasu

High School teachers in Japan are sending very busy days on their daily works including teaching, support for the club activities and deskwork. Among them, they share a lot of time for managing the club actives of students compared with other countries. In that area, professionals can make instruction much better than teachers for the special sports like Judo and Kendo (Japanese fencing) etc. School Social Worker can coordinate the professionals out of school and can help teachers by decreasing their burden on that area. There are few related papers concerning the support of club activities by utilizing the professionals outside. In this paper, a questionnaire investigation is executed to the five High Schools at Miyagi Prefecture in Japan in order to clarify their current condition and their consciousness, and to seek the possibility of utilizing school social worker for their support. Fundamental statistical analysis and Non-Parametric Test Analysis are performed. As for Q2”Consciousness for the daily works” and its related analysis, Null Hypotheses were rejected for 6 cases out of 60. As for Q3”Consciousness for guiding the club activities” and its related analysis, Null Hypotheses were rejected for 5 cases out of 48. Various cases should be investigated here after.


2010 ◽  
Vol 10 (7) ◽  
pp. 1317-1317
Author(s):  
B. Richard ◽  
D. Ellemberg ◽  
A. Johnson

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