Mark the following statements TRUE or FALSE: (A) 1 is BLUE in the presence of serial

Mark the following statements TRUE or FALSE:

(A) ˆ

1 is BLUE in the presence of serial correlation.

(B) In order to show that ˆ

1 is best, it must be assumed that the ei’s are not correlated with each other.

(C) In order to show that ˆ

1 is unbiased, it must be assumed that the true error terms are not correlated with each other.

(D) One of the conditions necessary for hypothesis testing is that the ui’s are normally distributed.

(E) One of the conditions necessary to prove that the OLS estimators are BLUE is that the ui’s are normally distributed.

(F) The estimators from a regression where the ui’s do not all have the same variance are biased.

(G) The estimators from a regression where the ui’s do not all have the same variance are inefficient.

(H) The estimators from a regression where the ui’s are not normally distributed are not best.

(I) The estimators from a regression where the ui’s are serially correlated are biased.

(J) The OLS estimators are undefined if n < k.

(K) An econometric model in the wrong functional form is biased.

(L) An underspecified econometric model is biased.

(M) An overspecified econometric model is biased.

(N) An econometric model is biased if E[ ˆ ]1 1.

(O) An econometric model is best if E[ ˆ ] = 1 1.