A child psychologist suspects that there is a linear relationship between the amount of calories in the lunches of preschool-age children and the length of time they are able to focus on a given subject. She calculates a regression line where the slope estimates the length of a child focusing (in minutes) with the number of calories consumed at lunch. She calculates a 95% confidence interval for the regression slope to be (-0.53, -0.34). Assuming the requirements for this confidence interval are met, what is the correct interpretation