3. (15 points) Now that you have a database of T1s, lengths, diameters, and launch weights, develop a CER of the form that predicts T1 for a new program. Try each independent variable, one at a time, and choose the best CER. There is no need to try any combination of variables, just test each of the three independently. Use GERM. Be sure to show all work, and indicate the best CER, your reason(s) for selecting it, and its relevant statistics