Essay
A local tire dealer wants to predict the number of tires sold each month.The dealer believes that the number of tires sold is a linear function of the amount of money invested in advertising.The dealer randomly selects 6 months of data consisting of tire sales (in thousands of tires)and advertising expenditures (in thousands of dollars).The equation of the least squares line is, = 3 + 1x.
-Provide an interpretation of the estimated y-intercept.
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