Table 3. Point estimates and confidence intervals under the model IIM₃.

Parameter	Estimate	95% confidence intervals
		Wald	Profile likelihood
${\theta }_{\mathit{a}}$	3.273	(3.101, 3.445)	(3.100, 3.444)
θ	3.357	(3.139, 3.575)	(3.097, 3.578)
${\theta }_{\mathit{b}}$	1.929	(0.079, 3.779)	(0.672, 5.010)
${\theta }_{{\mathit{c}}_1}$	6.623	(6.407, 6.839)	(6.415, 6.843)
${\theta }_{{\mathit{c}}_2}$	2.647	(2.304, 2.990)	(2.331, 3.021)
$T_1$	6.930	(6.540, 7.320)	(6.542, 7.319)
V	9.778	(9.457, 10.099)	(9.456, 10.098)
$M_2$	0.223	(0.190, 0.256)	(0.186, 0.259)

Results refer to the data of Wang and Hey (2010).