steel a machine is used to cut the bars to specific lengths The machine has a dial that sets the length of the bars to be cut However the dial is currently out of alignment and the plant manager is collecting data to assess the situation The table shows 8 trials at different dial settings with the actual output length of the bars that were cut All measurements are in millimeters Use the data to construct a least squares regression line to predict output length from dial setting Dial Setting 75 77 79 80 81 82 83 85 Output Length 78 79 82 83 85 83 86 88