The inefficiency term in stochastic frontier models is usually assumed to have positive skewness; but when this assumption is not met, efficiency scores are overestimated. Potential endogeneity of model regressors poses an additional empirical challenge and greatly hinders identification of...

This paper investigates an optimal reinsurance policy using a risk model with dependent claim and insurance premium by assuming that the insurance premium is random. Their dependence structure is modeled using Sarmanov’s bivariate exponential distribution and the Farlie–Gumbel–Morgenstern...

This study investigates whether there is convergence among Islamic countries with respect to the relationship between growth in Islamic financial markets and economic growth in those countries as measured by Gross Domestic Product. We use data from 2013 to 2021 for the nine Islamic countries...

In recent years, effective monitoring of categorical and count data has increasingly attracted attention of researchers in thearea of statistical process control. However, most of the existing research model categorical and count data streams as independentand identically distributed data or...