SIMPLE LINEAR REGRESSION

PLEASE HELP ME UNDERSTAND HOW SOLVE PROBLEM IF YOU KNOW HOW TO DO SIMPLE LINEAR REGRESSION.

Each week coaches in a certain football league face a decision during the game. On fourth-down, should the team punt the ball or go for a rst-down? To aid in the decision-making process, statisticians at a particular university developed a regression model for predicting the number of points scored (y) by a team that has a rst-down with a given number of yards (x) from the opposing goal line. One of the models t to data collected on ve league teams from a recent season was the simple linear regression model, E(y) = BO + 61x. The regression yielded the following results: y = 5.84 - 0.42x, r2 = 0.11. Complete parts a and b below. a. Give a practical interpretation of the coefcient of determination. r2. Choose the correct answer below. 0 A. Sample variations in the numbers of yards to the opposing goal line explain 89% of the sample variation in the numbers of points scored using the least squares line. 0 B. Sample variations in the numbers of yards to the opposing goal line explain 11% of the sample variation in the numbers of points scored using the least squares line. 0 c. There is a positive linear relationship between numbers of yards to the opposing goal line and numbers of points scored because 0.11 is positive. 0 D. There is little or no relationship between numbers of yards to the opposing goal line and numbers of points scored because 0.11 is near to zero