Question: Please help me solve this using the formula y^=a+bx b=x2nx2(xy)nxy a=ybx Sales of Volkswagen's popular Beetle have grown steadily at auto dealerships in Nevada during

Please help me solve this using the formula

y^=a+bx b=x2nx2(xy)nxy a=ybx Sales of Volkswagen's popular Beetle have grown steadily at auto dealerships in Nevada during the past 5 years (see table below). \begin{tabular}{cc} \hline Year & Sales \\ \hline 1 & 460 \\ 2 & 495 \\ 3 & 516 \\ 4 & 575 \\ 5 & 580 \\ \hline \end{tabular} a) Forecasted sales for year 6 using the trend projection (linear regression) method are 621.2 sales (round your response to one b) The MAD for a linear regression forecast is 7.8 sales (round your response to one decimal place). c) The MSE for the linear regression forecast is 98.2 sales (round your response to one decimal place)

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