39 For lower-level managerial employees of a fast-food chain. the prediction equation relat- ing Y = amual income (thousands of dollars) to X = number of years experience on the

= job equals 14.2+ 1.1X, for X = males and 14.2+.4X, for X = females. These equations show evidence of (select one, and explain)

a) Spurious relationship

b) Chain relationship

c) Statistical interaction