A correlation coefficient for 9 pairs of data is calculated to be -0.213. Is the relationship between the variables statistically significant? O Yes O No O Unable to determine QUESTION 6 For a given line of best fit, you computed that r = 0.6501 using n = 12 data points and the critical value is 0.576. Can the line be used for prediction? Why or why not? O If the scatter plot looks linear then, no, the line can be used for prediction, because r is less than the positive critical value. O If the scatter plot looks linear then, no, the line cannot be used for prediction, because r is greater than the positive critical value. If the scatter plot does look linear then, yes, the line can be used for prediction, because r is less than the positive critical value. O If the scatter plot looks linear then, yes, the line can be used for prediction, because r is greater than the positive critical value. QUESTION 7 For a given line of best fit, you computed that r = 0.5204 using n = 9 data points and the critical value is 0.666. Can the line be used for prediction? Why or why not? O If the scatter plot looks linear then, yes, the line can be used for prediction, because r is less than the positive critical value. O If the scatter plot looks linear then, no, the line cannot be used for prediction, because r is less than the positive critical value. If the scatter plot looks linear then, yes, the line can be used for prediction, because r is greater than the positive critical value. O If the scatter plot looks linear then, no, the line can be used for prediction, because r is greater than the positive critical value