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6. A law school administrator was interested in whether a student's score on the entrance exam can be used to predict a student's grade point average (GPA) after one year of law school. The administrator look a random sample of 15 students and computed the following summary information. where x = entrance exam score and y = GPA after one year: [4 marks] a - 13231-12912,}5- 48.58. Zara, - 4225.2. s. - c.9714, a, - "-4336 a) Find the correlation between the entrance exam score and the grade point average after one year of law school. Round your answer to three decimal places. bl Find the best-tting line relating grade point average after one year of law school and score on the entrance exam. Round the numerical values to four decimal places