Essay
The data regarding cost and related variables of a promotional insert in major magazines is given in the Table below. The multiple regression output is given below. Answer the questions that follow.
(A) Write down the Multiple Regression equation.
(B) What is the predicted cost of a promotional insert cost for a circulation of 7000, with a median age of 43 and median income of ?
(C) Is the overall regression line significant at 0.10 level?
(D) Is median age significant at 0.10 level?
(E) Which independent variable/s, if any, would you omit and why?
Correct Answer:

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(A) The regression equation is:
Y-hat 
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Correct Answer:
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Y-hat
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