3. The following data gives the information on the ages (in years) and the number of breakdowns during the past month for a sample of 7 machines at a large industrial company. Age (X) 12 7 8 13 9 4...

(d) Determine the equation of the regression line using least squares method.
(e) What is the expected breakdown for an eleven year old machine?

Extracted text: 3. The following data gives the information on the ages (in years) and the number of breakdowns during the past month for a sample of 7 machines at a large industrial company. Age (X) 12 7 8 13 9 4 Number of breakdowns (Y) 9 5 4 11 7 2