How do I find [y], [yi 2], [x], [xi 2], and [ xiyi] ? could you please explain that to me?

1. An engineer at a semiconductor assembly plant is investigating the relationship between pull strength of a wire bond (psi) and the wire length (mm). The data follow. (12 points) Pull Strength (y) |2 11 10 8 Wire Length (x) 10 17 32 35 25 a.) Fit a simple linear regression model relating pull strength to wire length using least squares. b.) What is the pull strength when the wire length is 30 mm? c.) What is the pull strength when the wire length is 50 mm? d.) What change in the pull strength is expected when the wire length changes by 6 mm