2. In the data given below there are three predictor variables: height; mass; age. The response variable represents the daily incomes of the people in the sample. Person A B C D E F Height in m (x1) 1.7 1.9 1.6 1.8 1.6 1.5 Mass in kg (x2) 60 65 80 85 75 60 Age in years (x3) 22 NA 41 30 19 23 Daily income in f (v) 40 45 44 31 28 27 (a) Carry out a hypothesis test at the 5% significance level to assess the fitted model, where the null and alternative hypotheses are given by: Ho : B, = By = B; =0 and Hi: at least one , #0 with Is j