4. A researcher gathers data from a sample of shopping mall customers in order to examine the relationship between hours spent at the shopping mall and dollars spent on purchases. The relationship between these variables is linear and has a moderate strength. The regression equation to predict dollars spent on purchases based on hours spent shopping is as follows: Predicted dollars spent = -6.05 + 5.58 (hours shopping) Which one of the following statements is a correct interpretation of this regression equation? A. As hours spent shopping goes up by 1, we predict that amount spent on purchases will go down by $6.05. B. As hours spent shopping goes up by 1, we predict that amount spent on purchases will go up by $5.58. C. As dollars spent on purchases goes up by 1, we predict that hours spent shopping will go down by 6.05. D. As dollars spent on purchases goes up by 1, we predict that hours spent shopping will go up by 5.58. E. 5.58% of the variability in dollars spent on purchases can be explained by the regression equation