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...

Can you assist me with question 13 by showing me the step by step process so, I can apply this to my notes and study.

Extracted text: 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 3 4 5 7 7 Demand for Guitars 6 7 11 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 = - 1.0000 + 1.3750'x c) The estimate for guitar sales if Maroon 5 performed on TV 10 times = 12.75 sales (round your response to two decimal places). d) The correlation coefficient (r) for this model = 0.8006 (round your response to four decimal places). The coefficient of determination (r) for this model = 0.6410 (round your response to four decimal places). The percentage of variation in sales that can be explained by TV appearances = 64.10 % (round your response to two decimal places).