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Quesnull: In a study of the relation between the experience (in years) (x) and the number of computers sold (y) during the last three months, we draw a sample of seven sales persons and obtain the following results 2):, =63 2y, =210 Ex. 3:' =2os4 2y? =sszo The correlation coefficient ( r ) = 0.89 Find: a) Find the suitable least squares regression line. b) Give a brief interpretation of the values of the Y-intercept and slope calculated in the previous part. c) Calculate the determinant coefficient and interpret its value. d) Predict the number of computers sold during the past three months by salespersons with twenty.r years experience