Using the summary variable describing the neighborhood in Problem 7.15, generate a loess graph to examine the relationship between this variable and the age at which adolescents started using...

Using the summary variable describing the neighborhood in Problem 7.15, generate a loess graph to examine the relationship between this variable and the age at which adolescents started using marijuana. Interpret the graph

PROBLEM 7.15

 For the Parental HIV data generate a variable that represents the sum of the variables describing the neighborhood where the adolescent lives (NGHB1–NGHB11). Does the age at which adolescents start smoking depend on the score describing the neighborhood?