A rocket motor is manufactured by bonding together two types of propellants, an igniter. and a sustainer. The shear strength of the bond y is thought to be a linear function of the age of the propellant x when the motor is cast. The observations are shown in the table below. Strength, 3! [psi] Age, 3: (weeks) 2158.70 15.50 1578.15 23.75 2315.00 8.00 2051 .30 1 7.00 220150 5.00 a. Find the correlation coefficient. Blank 1 b. Find the equation of the regression line: y = Blank 2 + Blank 3):: c. Estimate the mean shear strength of a motor made from propellant that is 20 weeks old. Blank 4 Blank 1 Add your answer Blank 2 ' Add your answer ' Add your answer Add your