3.

A professor was interested in determining if her students midterm scores were a good predictor of their scores on the final. She took a random sample of 20 students and recorded their scores on both the midterm and the final. Some summary statistics from the data are listed in the table below. Find the appropriate 95% confidence interval for the slope. Term Estimate Std. Error t Ratio Intercept -12.34 14.56 -2.56 Midterm 5.43 0.567 17.43 O 5.43 + 2.8784 (0.567) 5.43 + 2.1009(0.567) -12.34 + 2.1009(14.56) -12.34 + 2.8784(0.567)