Q 1 Test the following joint hypothesis about the coefficients on CYL (B1) and ENGCM3 (B2): H0: and , H1: or , with α=0.05.
Along with the previous results, what do you conclude about B1 and B2? Is this consistent with your intuition?
Q2 . Can you explain any conflict between the implications of the results obtained about and and your expectations? (Hint: Run auxiliary regressions for the explanatory variables in question against the others, and compute the correlations between all the explanatory variables. What do you notice?).