You may need to use the appropriate technology to answer this question. The following is part of the results of a regression analysis involving sales (y in millions of dollars), advertising expenditures (x, in thousands of dollars), and number of salespeople (x₂) for a corporation. The regression was performed on a sample of 10 observations. ý= Constant x1 Ho: x2 H₂: Coefficients (a) Write the regression equation. -11.320 0.788 0.151 P₁!=0 Standard Error -11.320 +0.788x₁ +0.151x2 20.452 (b) Interpret the coefficients of the estimated regression equation found in part (a). (Give your answers in dollars.) As advertising increases by 1 unit ($1,000), sales are expected to increase by $788 to increase by $ 151 X when advertising is held constant. 0.302 (c) At a = 0.05, test for the significance of the coefficient of advertising. State the null and alternative hypotheses. (Enter != for as needed.) B₁=0 0.218 Find the value of the test statistic. (Round your answer to two decimal places.) 2.61 Find the p-value. (Round your answer to four decimal places.) p-value = 0349 State your conclusion. x when the number of salespeople is held constant. As the number of salespeople increases by 1, sales are expected 6:16 PM

# You may need to use the appropriate technology to answer this question. The following is part of the results of a regression analysis involving sales (y in millions of dollars), advertising expenditures (x, in thousands of dollars), and number of salespeople (x₂) for a corporation. The regression was performed on a sample of 10 observations. ý= Constant x1 Ho: x2 H₂: Coefficients (a) Write the regression equation. -11.320 0.788 0.151 P₁!=0 Standard Error -11.320 +0.788x₁ +0.151x2 20.452 (b) Interpret the coefficients of the estimated regression equation found in part (a). (Give your answers in dollars.) As advertising increases by 1 unit ($1,000), sales are expected to increase by $788 to increase by $ 151 X when advertising is held constant. 0.302 (c) At a = 0.05, test for the significance of the coefficient of advertising. State the null and alternative hypotheses. (Enter != for as needed.) B₁=0 0.218 Find the value of the test statistic. (Round your answer to two decimal places.) 2.61 Find the p-value. (Round your answer to four decimal places.) p-value = 0349 State your conclusion. x when the number of salespeople is held constant. As the number of salespeople increases by 1, sales are expected 6:16 PM

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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