Infrared spectroscopy is often used to determine the natural rubber content of mixtures of natural and synthetic rubber. for mixtures of known percentages, the infrared spectroscopy gave the following readings: percentage: 0 20 30 60 80 100reading: 0.734 0.885 1.05 1.91 1.314 1.433(a) plot a scatter diagram. does a linear relationship seem reasonable? (b) estimate the regression coefficients.(c) if a new mixture gives an infrared spectroscopy reading of 1.15, estimate its percentage of natural rubber.