Question 2 (1 point) ) Listen A sample of 15 ordered pairs (x,y) has a value for "r" of r = - 0.523 Which of the following statements are true? At the 1% level of significance, a positive correlation exists O At the 5% level of significance, a positive correlation exists At the 1% level of significance, a negative correlation exists O At the 5% level of significance, a negative correlation exists No correlation exists between x and y Question 3 (1 point) Listen What is the value of the linear correlation coefficient "r" for the following table of values? X 1 N 4 6 6 8 Or=0.891 Or=0.916 Or=0.994 Or=0.997 Or=-0.957Question 4 (1 point) I:I Calculate the regression line for the following table of values: x v 2 5 4 8 6 10 2: 33:3 6511322: 11113;} = 15. 6 3. 71:13 I: 3;}: 1 35ml2. 27 CI 3;} : 1. 25.1: + 2. 67 \"13> ll 1. 86ml0. 23