Question Six: (6 points) Based on the statistical properties of OLS estimators, what is the value of theses terms (bonus grades): a)
(\sum_(t=1)^n hat(u)_(t))/(n)=
b)
\sum_(i=1)^n r_(t)hat(u)_(t)=
c)
,\sum_(i=1)^n hat(R)I_(t)hat(u)_(t)=
d)
\sum_(t=1)^n hat(u)_(t)=
I'm