the final mle estimates are :
coefficient standard-error t-ratio
beta 0 -0.26131829E+01 0.13514550E+01 -0.19336070E+01
beta 1 -0.26493885E-01 0.19288254E-01 -0.13735761E+01
beta 2 0.11975929E-01 0.13798077E-01 0.86794192E+00
beta 3 0.35311855E+00 0.21047486E+00 0.16777232E+01
beta 4 0.12105655E+00 0.79235754E-01 0.15278021E+01
sigma-squared 0.37041226E+00 0.88254700E-01 0.41970826E+01
gamma 0.29121964E-03 0.38436302E-01 0.75766820E-02
mu -0.20772224E-01 0.14591753E+01 -0.14235592E-01
eta 0.00000000E+00 0.10000000E+01 0.00000000E+00
log likelihood function = -0.28587513E+02
the likelihood value is less than that obtained
using ols! - try again using different starting values


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