Hello…

According to Hausman test (and test for normality of residuals) random effects model is wrong (you should estimate fixed effects model).

Best wishes,

Mariusz

Hausman test -

Null hypothesis: GLS estimates are consistent

Asymptotic test statistic: Chi-square(15) = 113,98

with p-value = 2,76456e-017

Test for normality of residual -

Null hypothesis: error is normally distributed

Test statistic: Chi-square(2) = 339,203

with p-value = 2,20321e-074