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A regression analysis between sales (in thousands of dollars) and advertising (in hundreds of dollars) resulted in the following least squares line: ˆy = 75 + 6x. This implies that if advertising is 800 dollars, then the predicted amount of sales (in dollars) is:

Respuesta :

Answer:

For this case we have the following model given :

[tex]\hat y = 75 + 6x[/tex]

And we know that y represent the sales (in thousands of dollars) and x the advertising (in hundreds of dollars) . And for this case we can use x =800/100=8 and replacing we got:

[tex] \hat y = 75 +6*8= 123[/tex]

That would be the predicted value for sales in dollars would be 123*1000= 123000

Step-by-step explanation:

For this case we have the following model given :

[tex]\hat y = 75 + 6x[/tex]

And we know that y represent the sales (in thousands of dollars) and x the advertising (in hundreds of dollars) . And for this case we can use x =800/100=8 and replacing we got:

[tex] \hat y = 75 +6*8= 123[/tex]

That would be the predicted value for sales in dollars would be 123*1000= 123000

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