Exercise 2 Let x = [1, 3, 6, 7, 11, 15, 18] y = [2.9628, 7.4609, 13.6742, 15.3746, 21.8654, 32.3408, 37.6540] with s = 2.7554 and variable coeff SE(coeff) t-value p-value x 1.8159 0.1803 10.0687 1.6542e-04 a) Construct a 95% Confidence Interval for the slope