(Solved): (a) Draw a scatter diagram displaying the data (b) Verify the given sums x,y,x2,y2,xy an ...

(a) Draw a scatter diagram displaying the data (b) Verify the given sums $$?x,?y,?x^2,?y^2,?xy$$ and the value of the sample correlation coefficient $$f$$. (Round your value for $$r$$ to four decimal places.) $$\begin{array}{l}2x=\\ {?}_y=x\\ \mathrm{Ex}=\\ 2y^2=\\ ?xy=\\ r=\end{array}$$ (c) Find $$\stackrel{?}{x}$$, and $$\stackrel{?}{y}$$, Then find the equation of the least-squares line $$\hat{y}=a+bx$$. (Round your answer to four decimal places.) (e) Find the value of the coetficient of determinstion $${?}^2$$. What percentage of the variation in $$y$$ can be expidined by the correspanding variation in $$x$$ and the least-squares line? What percentage is unexplained? (Round your answer for $${?}^2$$ to four decimal places. Raund your answers for the percentages to two decimal place:) explained ginexplained (f) Predict toe perpentage of al fatal accidents due to speeding for 60 -year-olds. (Rhound your answer to two decimal placesi) $$x+4$$