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1.The regression equation 丫 = 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 TWO of the following are true?
A.The estimate is not reliable because X is outside the range of the data
B.The estimate is not reliable because the correlation is low
C.The estimate is reliable
D.The estimate is not reliable because the sample is small
