【单选题】The regression equation Y = 3 + 2X has been calculated from 6 pairs of values, with X ranging from 1 to 10. The correlation coefficient is 0.8. It is estimated that Y = 43 when X = 20. Which of the fo...
【单选题】The regression equation Y=3+2x has been calculated from 6 pairs of values, with x range from 1 to 10. The correlation coefficient is 0.8. It is estimated that y=43 when x=20.Which of the following are...