Research Article

Estimation in Step-Stress Accelerated Life Tests for Power Generalized Weibull Distribution with Progressive Censoring

Table 4

95% approximate and bootstrap CIs and their lengths of the parameters , , and with population parameter values , , , and .

CIsLengths of CIs

Approx. CIBoot CIApprox. CIBoot CI
Approx. CIBoot CIApprox. CIBoot CI
Approx. CIBoot CIApprox. CIBoot CI

(0.2959, 0.8539)(0.3343, 0.7175)0.55800.3831
(0.4159, 1.0467)(0.5154, 0.9153)0.63070.3998
(0.4400, 2.2226)(0.3922, 2.1087)2.22261.7164