The grounds keeper at the Sunview golf course wants to know if there is a positive linear relationship between the density of seed spread on a newly landscaped fairway and the density of new grass 6 months later. The following data pairs represent some sample plantings made by the grounds keeper.

Seed Density lbs/400ft² (X) Grass density (seedlings/ft² (Y)

1.0 170

2.0 200

3.0 240

4.0 300

5.0 310

6.0 290

7.0 290

A) Construct a scatter diagram

B) Determine if r is significant at a signifance level of 5%. If r is significant at significance level of 5% then do questions C, D, and E.

C)Find R² and interpret its meaning.

D) Determine the regression equation Y²

E) Using the regression equation, predict the grass density given that grass seed, was applied at a rate of 3.5(lbs/400ft²)