Given the following data, use least squares regression to derive a trend equation: The least squares regression equation that shows the best relationship between demand and period is (round your responses to two decimal places): y^=+x where y^= Demand and x= Period. Mark Gershon, owner of a musical instrument distributorship, thinks that demand for guitars may be related to the number of television appearances by the popular group Maroon 5 during the previous month. Gershon has collected the data shown in the following table: [n This exercise contains only parts b,c, and d b) Using the least-squares regression method, the equation for forecasting is (round your responses to four decimal places): Y=+x