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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 tc is 200 what will be marginal cost?
conditions for an abnormal supply curve
There are various implications of the monopoly model; many of which lead to criticisms of monopoly on issues of both technical /allocative efficiency. The prices and output verifi
A competitive firm produces output using three fixed factors and one variable factor. The firm’s short-run production function is q = 154x – 5x2, where x is the amount of variable
Effects of weight loss A healthy body is required not only for the sake of health, but also for maintaining the standard frame of a body. A person experiencing the problem of weigh
The Effects of Advertising on the Demand Curve: Advertising targets to: • Change the slope of the demand curve which means make it more inelastic. This is done by generat
This is also known as sales force Opinion Method. In this method instead of consumers the opinion of the salesmen is sought. It is sometimes referred as the grassroots approach as
Which of the following is evidence of market power? a. Output is fixed despite cost changes b. Optimal Output is less than industry output c. Output changes as cost changes
project work
Average Fixed Cost (AFC): AFC is the fixed cost per unit of output. AFC = TFC/y Since the TFC is constant throughout the short run, as y increases AFC will decline. Therefore
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