The Following Is Part of the Results of a Regression $\alpha$

Essay

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 $\alpha$ =0.05,test for the significance of the coefficient of advertising.
d.At $\alpha$ =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.