Optimum Time-Censored Constant-Stress PALTSP for the Burr Type XII Distribution Using Tampered Failure Rate Model

Table 5

Effects of incorrect preestimate “𝑐” on optimal ALT plans (𝐴₁=1.5, 𝐴₂=3, 𝜂=5, 𝛼=0.9, 𝑐=3.5, and 𝑘=4, V^∗=1.30435).

% change	Incorrect sample proportions				Incorrect variance	% deviation
	𝑐	𝜙1^∗	𝜙2^∗	𝜙3^∗	V**	PD
1%	3.535	0.23483	0.26473	0.50044	1.28556	1.44015
−1%	3.570	0.37585	0.52415	0.10000	1.29585	0.65107
2%	3.605	0.19437	0.24250	0.56313	1.26608	2.93382
−2%	3.640	0.37800	0.52200	0.10000	1.27416	2.31434
3%	3.675	0.16283	0.23735	0.59982	1.25043	4.13323
−3%	3.465	0.37927	0.52073	0.10000	1.25527	3.76273