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..4.43 Mark Gershon, owner of a musical instrument dis- tributorship, thinks that demand for guitars may be related to the umber of television appearances by the popular group Maroon 5 during the previous month. Mark has collected the data shown in the following table: DEMAND FOR GUITARS 3 6 7 5 10 7 MAROON 5 TV APPEARANCES 4 6 a) Graph these data to see whether a linear equation might describe the relationship between the groups television shows b) Use the least-squares regression method to derive a forecasting c) What is your estimate for guitar sales if Maroon 5 performed d) What are the correlation coefficient (r) and the coefficient of and guitar sales. equation. on TV nine times last month? determination (2) for this model, and what do they mean? PX
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