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Lovely Lawns, Inc., intends to use sales of lawn fertilizer to predict lawn mower sales. The store manager estimates a probable sixweek lag between fertilizer sales and mower sales. The pertinent data are: Click here for the Excel Data File a. Determine the correlation between the two variables. Does it appear that a relationship exists between these variables will yleld good predictions? (Do not round intermediate calculations and round your answer to 3 decimal places.) b. Obtain a linear regression line for the data. (Negative values should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 3 decimal places.) c. Predict expected lawn mower sales for the first week in August, given fertilizer sales six weeks earlier of 2 tons. (Round your answer to the nearest whole number.)