# statistics

a sales manager used linear regression to find the positive linear relationship between advertising expenditures and sales. The amount of advertising expenditures used to generate the regression equation ranged from \$8,000 to \$45,000.

The sales manager wants to use the equation to predict the amount of sales that can be expected from advertising expenditures of \$55,000 and \$65,000.

Which would be more reliable, the sales predicted from the \$55,000 advertising expenditure or from the \$65,000 expenditure? Explain why!

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1. I would have more confidence in the sales at the \$55,000 expenditure level. Think it through, then take a shot.

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