A regional planner employed by a public university is studying the demographics of nine counties in the eastern region of an Atlantic seaboard state. She has gathered the following data: County Median Income Median Age Coastal
A $46,606 53.4 1
B 47,843 52.3 1
C 47,038 54.6 1
D 48,050 52.7 1
E 31,806 44.4 0
F 38,396 46.5 0
G 38,350 46.2 0
H 33,913 39.4 0

Required:
a. Is there a linear relationship between the median income and median age?
b. Use regression analysis to determine the relationship between median income and median age.