The paper referenced in Exercise 14.16 used a multiple regression model to describe the relationship between y = Percentage of body fat mass and three predictor variables.

x₁ = log of body mass index (log(kg/m²))

x₂ = log of age (log(years))

x₃ = Sex (0 5 male, 1 = female)

Exercise 14.16 also provided the following information: n = 3200, SSRegr = 540,000, and  Sresid = 180,000. Is the model proposed useful? Carry out a test using a significance level of 0.10.