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Problem:
(a) Why is an error term added to a regression and explain its importance in the OLS procedure?
(b) Suppose we have a linear equation with a constant term, one explanatory variable and an error term, show in details the steps required, using the OLS procedure, to derive the estimates of the constant term and that of the coefficient of the explanatory variable.
(c) Suppose a researcher wants to test whether the returns on a company stock (y) show unit sensitivity to two factors (factor x2 and factor x3) among three considered. The regression is carried out on 144 monthly observations. The regression is: Yt = β1 + β2x2t + β3x3t + β4x4t+ ut
i) What are the restricted and unrestricted regressions?
ii) If the two RSS are 502.4 and 302.8 respectively, perform an F-test of the restriction, showing all the required steps.
(d) How are the t-test and the F-test related and describe in which cases they cannot be applied?
If coolest icecream parlor has been closing at 5pm with $120 of marginal revenue and $80 of marginal cost for the last hour open, what should coolest icecream do to maximize profit
What is hyper inflation? How it can be reduced? Hyper inflation means that prices of the consumable goods are very high. Prices can be decreased by supplying more goods in th
In this part, use the results for market demand for short-run and long run market supply of good x1 obtained in parts one and two. When a change (e.g. income or taxes) is introduce
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How might a “perfect” macro equilibrium be affected by (a) a stock market crash; (b) the death of a president; (c) a recession in Canada; (d) a spike in oil prices?
International Monetary Fund: The International Monetary Fund (IMF), the World Bank and the International Trade Organisation were conceived at the Brettonwoods Conference in Ju
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