Question: Please show step by step solution on excel: Thank you! PA#5: Mark Gershon, owner of a musical instrument distributorship, thinks that demand for guitars may

Please show step by step solution on excel: Thank you!

PA#5: Mark Gershon, owner of a musical instrument distributorship, thinks that demand for guitars may be related to the number AND the length of television appearances by the popular group Maroon 5. Mark has collected the data shown in the following table (Note: You will use Excel to generate your answers answers):

Demand for Guitars 4 6 8 11 12 8

Maroon 5 No. of TV Appearances 3 5 4 6 7 5

Maroon 5 length of TV Appearances (Mins) 30 20 40 50 45 45

a) Graph these data to see whether a linear equation might describe the relationship between the groups No. of TV appearances and guitar sales.

b) Use the least-squares regression method to derive a forecasting equation.

c) What is your estimate for guitar sales if Maroon 5 performed on TV nine times AND 2 hours (in total)?

d) What are the correlation coefficient ( r ) and the coefficient of determination ( r 2 ) for this model, and what do they mean

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