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: Maroon 5 TV Appearances Demand for Guitars D 3 4 8 7 9 36769 6 6 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 1.6092 0.7391 x c) The estimate for guitar sales if Maroon 5 performed on TV 11 times sales (round your response to two decimal places).