In a simple linear regression, the following information is given: = -25; = 56; (xi -) (yi -) = -866 ; (xi -)2

In a simple linear regression, the following information is given:

= -25;
= 56; Σ (xi -
) (yi -
) = -866 ; Σ(xi -
)2 = 711

a. Calculate b1.

b. Calculate b0.

c. What is the sample regression equation? Predict y if x equals −20.