The following is part of the results of a regression analysis involving sales (y in millions of dollars), advertising expenditures (x1 in thousands of dollars), and number of salespeople (x2) for a corporation. The regression was performed on a sample of 10 observations.
a.Write the regression equation.
b.Interpret the coefficients of the estimated regression equation found in Part (a).
c.At =0.05, test for the significance of the coefficient of advertising.
d.At =0.05, test for the significance of the coefficient of number of salespeople.
e.If the company uses $50,000 in advertisement and has 800 salespersons, what are the expected sales? Give your answer in dollars.
Definitions:
Factor Portfolio
A portfolio that is constructed to have a high sensitivity to certain economic or financial factors, aiming to capture specific risk premiums.
Well-diversified Portfolio
An investment portfolio comprised of various assets to reduce exposure to risk by spreading investments across different industries, asset classes, or other categories.
Beta
A measure of the volatility, or systematic risk, of a security or portfolio compared to the market as a whole.
Factor Portfolio
A portfolio constructed to have a high sensitivity to certain risk factors, aiming to achieve specific investment outcomes related to those factors.
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