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: period fertilizer sales (tons) number of mowers sold (six-week lag) period fertilizer sales (tons) number of mowers sold (six-week lag) 1 1.6 10 8 1.3 7 2 1.3 8 9 1.7 10 3 1.8 11 10 1.2 6 4 2.0 12 11 1.9 11 5 2.2 12 12 1.4 8 6 1.6 9 13 1.7 10 7 1.5 8 14 1.6 9 a. Determine the correlation between the two variables. Does it appear that a relationship exists between these variables will yield good predictions