The director of special events for Sun City believed that the amount of money spent on fireworks displays for the Fourth of July was predictive of attendance at the Fall Festival held in October. She gathered the following data to test her suspicion.

a. Compute and report the regression equation that predicts “fall festival attendance” with “amount spent on Fourth of July fireworks.” Report the coefficient of determination. Interpret the regression coefficient.

b. Evaluate the regression assumptions based on an analysis of the residuals.

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4th of July ($000) Fall Festival (000) 4th of July ($000) Fall Festival (000) 10.6 8.8 9.0 9.5 8.5 6.4 10.0 9.8 12.5 10.8 7.5 6.6 9.0 10.2 10.0 10.1 5.5 6.0 6.0 6.1 12.0 11.1 12.0 11.3 8.0 7.5 10.5 8.8 7.5 8.4