The following table shows 15 randomly selected geographic areas ranked by population density and age-adjusted death rate. Can we conclude at the .05 level of significance that population density and age-adjusted death rate are not mutually independent?

Rank by Rank by Area Population Density (X)
Age-Adjusted Death Rate (Y) Area Population Density (X)
Age-Adjusted Death Rate (Y)
1 8 10 9 6 8 2 2 14 10 14 5 3 12 4117 6 4 4 15 12 1 2 5 9 11 13 13 9 6 3 114 15 3 7 10 12 15 11 13 85 7