We are interested in factors that will affect infant birth weight (bw). One of the explanatory variables is the average number of eggs that is consumed by the mother per week during pregnancy (egg). The following simple regression was estimated using data on 1,500 births: .-|-.. bwL = 118.4- + 0.32999;- (24.6) (0.12) (a) Can you think about possible factors contained in ui? (b) Interpret the above regression results. What's the meaning of the intercept? And of the slope coefficient