Is the amount of money spent by companies on advertising a function of the total revenue of

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Is the amount of money spent by companies on advertising a function of the total revenue of the company? Shown are revenue and advertising cost data for nine companies published by Advertising Age.

Is the amount of money spent by companies on advertising

Use the data to develop a regression line to predict the amount of advertising by revenues. Compute se and r2. Assuming α = .05, test the slope of the regression line. Comment on the strength of the regression model.

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