The number of internal disk drives (in millions) made at a plant in Taiwan during the past 5 years follows: 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 2 (round your response to one decimal place). a) Based on the given monthly sales data, it can be said that there is linear trend in sales over time. b) First, co-owner Bob Day wants to forecast by exponential smoothing by initially setting February's forecast equal to January's sales with =0.20. Using the forecasting method, Bob's forecast for the month of May is (round your response to two decimal places): Second, co-owner Sherry Snyder wants to forecast using a three-period moving average. The forecast for the month of May is (round your response to two decimal placos). c) Assume that May's actual sales figure turns out to be 405 . For the forecast developed by Bob using exponential smoothing, the mean absolute deviation (MAD) = sales (round your response to two decimal places)