An SRS of 400 high school seniors gained an average of x40 points in their second attempt at the SAT Mathematics exam. Assume that the change in score has a Normal distribution with standard deviation o = 25. We want to estimate the mean change in score je in the population of all high school seniors. Give a 95% confidence interval for j based on this sample. Provide your answers for the lower bound and the upper bound of the interval to one decimal place. 41.2 lower bound Incorrect upper bound= 44.81 incorrect