The manager of the Petroco Service Station wants to forecast the demand for unleaded gasoline next month so that the proper number of gallons can be ordered from the distributor. The owner has accumulated the following data on demand for unleaded gasoline from sales during the past 10 months.

Month Gasoline Demand (Gal)

October 800

November 725

December 630

January 500

February 645

March 690

April 730

May 810

June 1200

July 980

In the Petroco Service Station problem, compute an exponentially smoothed forecast with an value of .30. According to the result from Excel and/or POM-QM, the forecast for the month of August is (type number only, two decimals)

In the Petroco Service Station problem, for the exponentially smoothed forecast with an value of .30, compute the mean absolute deviation (MAD) via Excel and/or POM-QM. It is (type number only, two decimals)

In the Petroco Service Station problem, compute an exponentially smoothed forecast with an value of .50. According to the result from Excel and/or POM-QM, the forecast for the month of August is (type number only, two decimals)

In the Petroco Service Station problem, for the exponentially smoothed forecast with an value of .50, compute the mean absolute deviation (MAD) via Excel and/or POM-QM. It is (type number only, two decimals)