Eddies Restaurants collected the following data on the relationship between advertising and sales at a sample of

Eddie’s Restaurants collected the following data on the relationship between advertising and sales at a sample of five restaurants:

a. Let x represent advertising expenditures and y represent sales. Use the method of least squares to develop a straight-line approximation of the relationship between the two variables.
b. Use the equation developed in part (a) to forecast sales for an advertising expenditure of$8000.

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Advertising Expenditures ($1000s 1.0 4.0 6.0 0. 14.0 Sales ($1000s) 19.0 44.0 40.0 52.0 53.0