Below You Are Given a Partial Computer Output Based on a Sample

Below you are given a partial computer output based on a sample of 21 observations, relating an independent variable x) and a dependent variable y).
$$\begin{array} { l c c } \text { Predictor } & \text { Coefificient } & \text { Standard Error } \\\text { Canstant } & 30.139&1.181 \\\text { X } & -0.252&0.022\end{array}$$ Analysis of Variance
SOURCE SS
Regression 1,759.481
Error 259.186
a. Develop the estimated regression line.
b. At α = 0.05, test for the significance of the slope.
c. At α = 0.05, perform an F test.
d. Determine the coefficient of determination.
e. Determine the coefficient of correlation.