The accompanying data are the number of wins and the earned run averages (mean number of earned runs allowed per nine inningspitched) for eight baseball pitchers in a recent season. find the equation of the regression line. then construct a scatter plot of the data and draw the regression line. then use the regression equation to predict the value of y for each of the given x-values, if meaningful. if the x-value is not meaningful to predict the value of y, explain why not.

(a) x=5 wins (b) x=10wins (c) x=21 wins (d) x=15 wins

the equation of the regression line is y = ? x + ? .

*table of numbers of wins and earned run average.

"wins, x","earned run average, y"
20,2.78
18,3.23
17,2.67
16,3.73
14,3.89
12,4.39
11,3.85
9,5.09

(round to two decimal places as needed.)