TY - JOUR
TI - Accelerated competing risks model from Gompertz lifetime distributions with type-II censoring scheme
AU - Almarashi Abdullah M
AU - Abd-Elmougod Gamal A
JN - Thermal Science
PY - 2020
VL - 24
IS - 11
SP - 165
EP - 175
PT - Article
AB - Time to failure under normal stress conditions may take a long period of time  and statistical inferences under this condition is more serious. Then, the  experiment is loaded under stress higher than normal one which is defined as  accelerated life tests. This problem in this paper is discussed in the form  of partially step-stress accelerated life test model when the lifetime of  the product has Gompertz lifetime distribution and unites are fails under  the two independent risks. The maximum likelihood method under type-II  censoring scheme is used to formulate the point and asymptotic confidence  interval estimators of model parameters. The two boot­strap methods are also  used to formulate the point and approximate interval estimators. The  numerical results are adopted in the form of Monte Carlo studying to  illustrate, assess and compare all of the theoretical results. Finally,  results are discussed in points to clarify results validity.