Price ceilings set below the equilibrium create:

In the above table, which technique is technologically inefficient?

A) Technique W B) Technique X C) Technique Y D) Technique Z

If Xit is correlated with Xis for different values of s and t, then

A) Xit is said to be autocorrelated B) the OLS estimator cannot be computed C) statistical inference cannot proceed in a standard way even if clustered standard errors are used D) this is not of practical importance since these correlations are typically weak in applications