s |_ QUESTION 3 [2 + (1+2+1) + 4 = 10 marks] A concert manager wanted to investigate the relationship between advertising expenditure and ticket sales. Analysing data over 15 years, regression analysis was performed and the following output as shown: Exhibit 3.1 Regression Statistics Multiple R 0.8090 R Square 0.6545 Adjusted R Square 0.6279 Standard Error 158.28 Observations 15 Standard Lower Upper Coefficients Error If Stat P- uaiae 95% 95% Intercept 215.678 119.6549 1.8025 0.0947 42.8204 474.1770 Advertising (5.000) 1.852 0.3731 4.9623 0.0003 1.0455 2.6576