a) Using simple linear regression, the forecast for the number of disk drives to be made next year = ? disk drives (round your response to one decimal place).

b) The mean squared error (MSE) when using simple linear regression = ? drives (round your response to one decimal place).

c) The mean absolute percentage error (MAPE) when using simple linear regression = ? (round your response to one decimal place).

The number of internal disk drives (in millions) made at a plant in Taiwan during the past 5 years follows: \begin{tabular}{cc} \hline Year & Disk Drives \\ \hline 1 & 142 \\ 2 & 160 \\ 3 & 184 \\ 4 & 200 \\ 5 & 210 \\ \hline \end{tabular}