Big fish: A sample of 76 one-year-old spotted flounder had a mean length of 120.62 millimeters with a sample standard deviation of 17.72 millimeters, and a sample of 124 two-year-old spotted flounder had a mean length of 134.54 millimeters with a sample standard deviation of 25.52 millimeters. Construct a 90% confidence interval for the mean length difference between two-year-old flounder and one-year-old flounder. Let μ1 denote the mean length of two-year-old flounder and round the answers to at least two decimal places.