12.4.7 Refer to the Ca pump activity of Exercise 12.2.10. For these data . Assuming that the linear model is applicable, estimate the mean and standard deviation basal Ca pump activity for children born to mothers with a hair Hg level of . Using the values computed in part (a) to support your answer, would it be surprising for a mother with a hair Hg level of to give birth to a child with a basal Ca pump activity above 4000 nmol/mg/hr?