A rocket motor is manufactured by bonding togethertwo 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 at when the motor is cast. The observations are shown in the table below. Strength. 3! (psi) Age, at (weeks) 2053.50 18.00 2414.40 6.00 2200.50 12.50 2554.20 2.00 1753.70 21.50 a. Find the correlation coefficient. Blank 1 b. Find the equation of the regression line: y = Blank 2 + Blank 3x 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 Blank 4 Add your