Modeling and inference for survival analysis problems typically revolves around different functions related to the survival distribution. Here, we focus on the mean residual life (MRL) function, which provides the expected remaining lifetime given that a subject has survived (i.e. is event-free) up to a particular time. This function is of direct interest in reliability, medical, and actuarial ...

We study a classic Cournot market, which we extend to a two-stage game with endogenous cost formation: the retailers’ marginal cost represents purchases from a price-setting, revenue-maximizing supplier. Any demand uncertainty falls to the supplier, who acts first and sets the wholesale price under incomplete information concerning the retailers’ willingness-to-pay for ordering the product. We ...

We utilize the important characterization that E(X− t|X > t) is a constant for t ∈ [0,∞) if and only if X is distributed as an exponential random variable, in order to construct a new test procedure for exponentiality. We discuss asymptotic distribution theory and other properties of the proposed procedure. Simulation studies indicate that the proposed statistic has very good power in a large v...

Introduction. Cardiovascular diseases are the leading cause of death in hemodialysis patients. The decline of residual renal function increases the prevalence and severity of risk factors of cardiovascular morbidity and mortality in these patients. Hypertension is common in dialysis patients and represents an important independent factor of survival in these patients. Methods. The study include...

In this paper we provide a sufficient condition for mean residual life ordering of parallel systems with n ≥ 3 heterogeneous exponential components.

Patients’ illness might also affect their relatives’ psychological state. The present crosssectional study aimed at assessing the levels of burden, expressed emotion, psychological distress and quality of life in a sample of relatives of Mexican outpatients with psychosis and the possible effect of illness course assessed retrospectively. Sample included 65 participants: 73.8% female; mean age ...

introduction: many of study show decrease of quality of life in mothers of children with cerebral palsy due to care activity of their child but the researchers less pay attention to the decrease of mother’s quality of life in relationship with child-related factors like walking ability in children with cerebral palsy, so the aim of this study was tocomparing the quality of life of mothers with ...

Shanker [4] has discussed its various mathematical and statistical properties including its shape for different values of its parameter, moment generating function, moments, skewness, kurtosis, hazard rate function, mean residual life function, stochastic orderings, mean deviations, Bonferroni and Lorenz curves, amongst others. Further, Shanker [4] has also discussed the estimation of its param...