Table 3 Parameter estimates for the carbon fibers data

$\widehat{\theta }=0.1612$

$\widehat{\mathit{\alpha }}=6.0389$

$ĉ=2.4062$

$\widehat{\mathit{\alpha }}=4.7966$

(0.0198)*

(1.3675)

(0.2226)

(0.8076)

$\widehat{\mathit{\lambda }}=0.3919$

$\widehat{\gamma }=6.9991$

$\widehat{\mathit{\beta }}=1.2932$

(0.0434)

(0.3780)

(0.2296)

-114.8292

-87.0385

-86.0629

-85.9070

231.6584

178.0770

176.1258

175.8140

0.2768

0.0854

0.0894

0.0693

0.0001

0.7215

0.6676

0.9090