A Regression Analysis Relating a Company's Sales, Their Advertising Expenditure

A regression analysis relating a company's sales, their advertising expenditure, price, and time resulted in the following.
a.At 95% confidence, determine whether or not the regression model is significant. Fully explain how you arrived at your conclusion (give numerical reasoning) and what your answer indicates.
b.At 95% confidence determine which variables are significant and which are not. Explain how you arrived at your conclusion (Give numerical reasoning).
c.Fully explain the meaning of R-square, which is given in this model. Be very specific and give numerical explanation.

Correct Answer:

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a.Since significance F = 0.0000 < = 0.0...

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