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A regression analysis between sales (y in $1000) and advertising (x in 100 dollars) resulted in the following equation y= 30,000 +4x What does the
A regression analysis between sales (y in $1000) and advertising (x in 100 dollars) resulted in the following equation y= 30,000 +4x What does the equation tell you regarding what we expect to happen to sales when we increase advertising by $200
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