a) What is the linear regression equation for predicting Total Yoarly Purchase from age? TPP=+1 Age (Round the final answer to three decimal places as neoded. Round all intermediate values to three decimal places as needed.) b) Do the assumptions and conditions for regression appear to be met? No Yes c) What is the predicted average Total Yearty Purchase for a 28-year- old? 1 (Round to two decimal places as needed.) For a 56-year-old? s (Round to two decimal places as needed.).