Question 1 of 8 (1 point) |Attempt 1 of Unlimited 10.1 Section Ex Big fish: A sample of 87 one-year-old spotted flounder had a mean length of 116.85 millimeters with a sample standard deviation of 16.48 millimeters, and a sample of 134 two-year-old spotted flounder had a mean length of 137.16 millimeters with a sample standard deviation of 28.43 millimeters. Construct a 90% confidence interval for the mean length difference between two-year-old flounder and one-year-old flounder. Let u denote the mean length of two-year-old flounder and round the answers to at least two decimal places. A 90% confidence interval for the mean length difference, in millimeters, between two-year- old flounder and one-year-old flounder is