Question: Regression with seasonal indicators

A regional power company has generated the following regression model for forecasting the total amount of electrical power used by its customers (in megawatt-hours) each quarter:

where , , and are indicator variables of the form

	if the data are associated with Quarter
	otherwise

This model is developed using a data set that starts in Quarter of (i.e., the first time period is associated with Quarter of ). Use this model to forecast the total amount of power (in megawatt-hours) that will be used in Quarter of .

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