Show that E(&) = a, using the fact that E(a) = $. Using the information given in Problem 10.2.3 with the additional information that x= 2.3, find the predicted average income tax due for an individual...

Show that E(&) = a, using the fact that E(a) = $.

Using the information given in Problem 10.2.3 with the additional

information that x= 2.3, find the predicted average income tax

due for an individual with two dependents. Find a 95% confidence

interval for this prediction.