The following data represent a company's yearly sales based on its advertising expenditure over a period of 8 years.

Advertising Expenditure (in $10,000)	Sales in Millions of Dollars
32	12
33	15
34	18
34	17
35	16
37	22
39	21
40	24

a.	Develop a complete scatter diagram displaying the relationship (if any) that advertising has on total sales.
b.	Explain what the scatter diagram shows regarding the relationship (if any) between sales and advertising.
c.	Compute the correlation coefficient.
d.	Compute the estimated regression equation between sales and advertising?
e.	If the company's advertising expenditure is $400,000, what are the predicted sales in dollars?
f.	Compute the coefficient of determination.
g.	Fully interpret the meaning of the coefficient of determination in the context of this problem.
h.	Does the linear equation seem to be a good predictor for sales? Explain.