





The Relative Potency of Two Drugs Using the Confidence Interval for Ratio of Means of Two Normal Populations with Unknown Coefficients of Variation, Vol. 11, No. 1 (Jan. 2022), PP:114
doi:10.18576/jsap/110101




Authors: 

Warisa Thangjai  Department of Statistics, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand


SaAat Niwitpong  Department of Applied Statistics, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand










ConstantPartially Accelerated Life Tests for Three Parameter Distribution: Bayes Inference using Progressive TypeII Censoring, Vol. 11, No. 1 (Jan. 2022), PP:1528
doi:10.18576/jsap/110102




Authors: 

M. A. W. Mahmoud  Mathematics Department, Faculty of Science, AlAzhar University, Nasr city 11884, Cairo, Egypt


M. G. M. Ghazal  Mathematics Department, Faculty of Science, Minia University, Minia 61519, Egypt\\ Mathematics Department, University of Technology and Applied SciencesAl Rustaq, 329Rustaq, Sultanate of Oman


H. M. M. Radwan  Mathematics Department, Faculty of Science, Minia University, Minia 61519, Egypt










Estimating South Africa’s Growth Risk using GARCHType Models and HeavyTailed Distributions, Vol. 11, No. 1 (Jan. 2022), PP:2939
doi:10.18576/jsap/110103




Authors: 

Retius Chifurira  School of Mathematics, Statistics and Computer Science, University of KwaZuluNatal, Private Bag X54001, Durban 4000, South Africa


Knowledge Chinhamu  School of Mathematics, Statistics and Computer Science, University of KwaZuluNatal, Private Bag X54001, Durban 4000, South Africa










Proposed Models for Comprehensive Automobile Insurance Ratemaking in Egypt with Parametric and SemiParametric Regression: A case study, Vol. 11, No. 1 (Jan. 2022), PP:4155
doi:10.18576/jsap/110104




Authors: 

Eslam Seyam  Statistics and Insurance Department, Faculty of Commerce, Zagazig University, 44519, Egypt


Hussien Elsalmouny  Statistics and Insurance Department, Faculty of Commerce, Zagazig University, 44519, Egypt














Characterizations and Testing NBRUL Class of Life Distributions Based on Laplace Transform Technique, Vol. 11, No. 1 (Jan. 2022), PP:7588
doi:10.18576/jsap/110106




Authors: 

Rashad M. ELSagheer  Mathematics Department, Faculty of Science, ALAzhar University, Nasr City 11884, Cairo, Egypt


Shaban E. AbuYoussef  Mathematics Department, Faculty of Science, ALAzhar University, Nasr City 11884, Cairo, Egypt


Amr Sadek  Mathematics Department, Faculty of Science, ALAzhar University, Nasr City 11884, Cairo, Egypt


Khairi Mohamed Omar  Business Administration Department, College of Administrative Sciences, Applied Science University, Kingdom of Bahrain


Walid B. H. Etman  Mathematics Department, Faculty of Science, ALAzhar University, Nasr City 11884, Cairo, Egypt










ValueatRisk Estimation of Precious Metal Returns using Long Memory GARCH Models with HeavyTailed Distribution, Vol. 11, No. 1 (Jan. 2022), PP:89107
doi:10.18576/jsap/110107




Authors: 

Knowledge Chinhamu  School of Mathematics, Statistics and Computer Science, University of KwaZuluNatal, Private Bag X54001, Durban 4000, South Africa


Retius Chifurira  School of Mathematics, Statistics and Computer Science, University of KwaZuluNatal, Private Bag X54001, Durban 4000, South Africa


Edmore Ranganai  Department of Statistics, University of South Africa, Florida, South Africa














Prediction of Foreign Direct Investment: an Application to South African Data, Vol. 11, No. 1 (Jan. 2022), PP:115133
doi:10.18576/jsap/110109




Authors: 

Nyawedzeni Netshivhazwaulu  Department of Statistics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa


Caston Sigauke  Department of Statistics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa


Alphonce Bere  Department of Statistics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa










Cubic Transmuted Fre ́chet Distribution, Vol. 11, No. 1 (Jan. 2022), PP:135145
doi:10.18576/jsap/110110




Authors: 

Mohammed Ahmed Mosilhy  Depatment of Mathematics, Faculty of Science, Cairo University, Egypt\\ Department of Statistics, Faculty of Science, University of Tabuk, KSA


Hussein Eledum  Department of Statistics, Faculty of Science, University of Tabuk, KSA\\ Department of Statistics, Faculty of Science and Technology, Shendi University, Sudan














PoissonOdoma Distribution, Vol. 11, No. 1 (Jan. 2022), PP:155161
doi:10.18576/jsap/110112




Authors: 

Ayat T. R. AlMeanazel  Department of Mathematics, Al Albayt University, P.O.BOX 130040, Mafraq 25113, Jordan


Ahmad M. H. AlKhazaleh  Department of Mathematics, Al Albayt University, P.O.BOX 130040, Mafraq 25113, Jordan


















Progressive FirstFailure Censored Samples in Estimation and Prediction of NH Distribution, Vol. 11, No. 1 (Jan. 2022), PP:189204
doi:10.18576/jsap/110115




Authors: 

N. A. AbouElheggag  Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt


ALWageh A.Farghal  Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt


G. A. AbdElmougod  Mathematics Department, Faculty of Science, Damanhour University, Damanhour, Egypt


Osama M. Taha  Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt










Vector Error Correction Modeling of COVID19 Infected Cases and Deaths, Vol. 11, No. 1 (Jan. 2022), PP:205214
doi:10.18576/jsap/110116




Authors: 

Rajarathinam Arunachalam  Department of Statistics, Manonmaniam Sundaranar University, Tirunelveli – 627012, Tamil Nadu State, India


Tamilselvan Pakkirisamy  Department of Statistics, Manonmaniam Sundaranar University, Tirunelveli – 627012, Tamil Nadu State, India










Stochastic Modelling of the BRICS Equity Markets’ Risks, Vol. 11, No. 1 (Jan. 2022), PP:215239
doi:10.18576/jsap/110117




Authors: 

Rosinah M. Mukhodobwane  Department of Mathematics and Applied Mathematics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa


Caston Sigauke  Department of Statistics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa


Wilbert Chagwiza  Department of Mathematics and Applied Mathematics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa


Winston Garira  Department of Mathematics and Applied Mathematics, University of Venda, Private Bag X5050, Thohoyandou 0950, Limpopo, South Africa










Creating Sustainable Engagement Practices for Generation Z: Role of CSR in Organizations, Vol. 11, No. 1 (Jan. 2022), PP:241249
doi:10.18576/jsap/110118




Authors: 

Deepika Pandita  Symbiosis Institute of Business Management Pune, Symbiosis International (Deemed University), Pune, Maharashtra, India 412115


Ritesh Khatwani  Symbiosis Institute of Business Management Pune, Symbiosis International (Deemed University), Pune, Maharashtra, India 412115














Interactive Approach for Solving Multilevel Multi objective Quadratic Fractional Programming Problems with Fuzzy Parameters in the Constraints, Vol. 11, No. 1 (Jan. 2022), PP:265276
doi:10.18576/jsap/110120




Authors: 

F. A. Farahat  Higher Technological Institute,Tenth of Ramadan City, Cairo 44637, Egypt


M. A. El Sayed  Basic Sciences Department, Faculty of Engineering, Badr University in Cairo BUC, Cairo 11829, Egypt\\ Department of Basic Engineering Sciences, Faculty of Engineering, Benha University, ElQalyoubia 13511, Egypt


M. A. Elsisy  Department of Basic Engineering Sciences, Faculty of Engineering, Benha University, ElQalyoubia 13511, Egypt\\ Department of Basic Engineering Sciences, Menoufia Higher institute of Engineering and Technology, ElBagour, Menoufia 32821, Egypt










Internal Consistency Between Validity and Reliability in Academic Research: An Evaluation Study, Vol. 11, No. 1 (Jan. 2022), PP:277286
doi:10.18576/jsap/110121




Authors: 

Amel Mohamed Beichi  College of Humanities and Sciences, Ajman University, Ajman, UAE\\ Humanities and Social Sciences Research Center (HSSRC), Ajman University, Ajman, UAE


Sakina Mhamed Tchalabi  College of Humanities and Social Sciences, Blida University, Algeria


Najeh Rajeh Alsalhi  College of Humanities and Sciences, Ajman University, Ajman, UAE\\ Nonlinear Dynamics Research Center (NDRC), Ajman University, Ajman, UAE\\ Humanities and Social Sciences Research Center (HSSRC), Ajman University, Ajman, UAE










Proposed Approach for Solving Stochastic Vector Optimization Problem with Random parameters in the Constraints, Vol. 11, No. 1 (Jan. 2022), PP:287290
doi:10.18576/jsap/110122




Authors: 

Adel M. Widyan  Mathematics Department, College of Science, Qassim University, KSA


Ahmed A. Elsawy  Mathematics Department, College of Science, Qassim University, KSA


Atheer I. Aljutaily  Mathematics Department, College of Science, Qassim University, KSA














The Impact of International Migration and the Third Childbirth Event in Egypt using the Simultaneous Hazard Model, Vol. 11, No. 1 (Jan. 2022), PP:305319
doi:10.18576/jsap/110124




Authors: 

Sherien Moustafa  Department of Biostatistics & Demography, Faculty of Graduate Studies for Statistical Research, Cairo University, Cairo, Egypt


Mostafa El Misery  Department of Biostatistics & Demography, Faculty of Graduate Studies for Statistical Research, Cairo University, Cairo, Egypt


Elsayed Khater  Department of Biostatistics & Demography, Faculty of Graduate Studies for Statistical Research, Cairo University, Cairo, Egypt



















