A child psychologist suspects that there is a linear relationship between the amount of calories, and 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