Lovely Lawns, Inc., intends to use sales of lawn fertilizer to predict lawn mower sales. The store manager estimates a probable six-week lag between fertilizer sales and mower sales. The pertinent data are:

a. Determine the correlation between the two variables. Does it appear that a relationship between these variables will yield good predictions? Explain.
b. Obtain a linear regression line for the data.
c. Predict expected lawn mower sales for the first week in August, given fertilizer sales six weeks earlier of 2tons.

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Fertilizer Number of Mowers Sold (six-week lag) 10 Fertilizer Number of Mowers Sold (six-week la) Period (tons) Period 10 12 12 10