QUESTION 16 16) Don, a ground's keeper at a golf course, wants to know if there is a positive linear correlation between the density of seeds spread on a newly landscaped fairway and the density of new grass six months later. The following data pairs represent some sample plantings made by Don SEED DENSITY (Ibs/400ft2) GRASS DENSITY (seedlings/ft2) 1.0 170 2.0 200 3.0 240 4.0 300 5.0 311 6.0 290 7.0 290 Determine the sample correlation coefficient "r" ( 2 decimal places) a. .74 O b. none of the choices O c. .22 O d. .86 QUESTION 17 17) Referring to question 16, determine the regression equation O a. y=170 + .74x O b. none of the choices O c. y= .65 +.74x O d.y=170+21.82x