n

m

Estimates

RMSE

$\widehat{a}$

$\widehat{b}$

$\widehat{\alpha }$

$\widehat{\beta }$

$\widehat{a}$

$\widehat{b}$

$\widehat{\alpha }$

$\widehat{\beta }$

25

15

1.6346

1.9228

1.2833

0.6301

2.1274

2.0622

1.5970

3.1484

20

2.0388

1.6436

1.1927

1.0383

1.0591

1.3232

0.9489

1.0364

25

2.0723

1.9273

0.9889

1.0761

0.4639

0.6423

0.3130

0.6419

40

20

2.0371

1.9960

1.0133

1.0716

1.3787

1.8453

0.8290

0.8120

30

2.0199

2.0494

0.9433

1.0301

0.4582

0.8808

0.3870

0.2936

40

2.0011

1.9357

1.0222

1.0030

0.3196

0.5117

0.2313

0.1701

65

30

2.0751

1.9770

1.0153

1.0176

0.3112

0.7451

0.2008

0.1108

45

2.0148

2.0949

0.9944

1.0012

0.2384

0.3315

0.1546

0.0536

65

2.0148

1.9991

1.0063

0.9988

0.2610

0.6053

0.1451

0.0720