Question 1

30. If the least squares regression line for predicting y from x is y = 500 - 20x, what is the predicted value of y when x = 10? (a) 300 (b) 500 (c) 200 (d) 700 (e) 20. 31. Suppose that the least squares regression line for predicting y from x is y = 100 + 1.3x. Which of the following is a possible value for the correlation between y and x? ................
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