Name:__________________________ Chapter 4 Problem Solving 1. A long-term study of changing environmental conditions in the Chesapeake Bay found the following annual average salinity readings in one location in the bay, where t = 0 stands for the year 2000, t = 10 stands for the year 2010, etc. 0 1 2 3 4 5 6 7 t (year) 9.3 14.9 13.9 14.8 13.3 15 15.3 Salinity 11.2 y% a. What is the regression equation? Calculate the slope and y-intercept by hand and show all of your work! b. What is the coefficient of determination? Calculate r 2 by hand and show all of your work