9. The final score (Y) of students in a course was correlated with score (CX) in entrance test. The relevant data in coded units are as follows: Y: 2 8 5n 4 2 X: 6. (a) Obtain the lincar regression...

Extracted text: 9. The final score (Y) of students in a course was correlated with score (CX) in entrance test. The relevant data in coded units are as follows: Y: 2 8 5n 4 2 X: 6. (a) Obtain the lincar regression equation of Y on .X. (b) Obtain the correlation coefficient and interpret it. (c) Predict Y when X = 4. If the predicted value is different from the observed value of 6. Explain the reasons for the difference.