The article "Effects of Diets with Whole PlantOrigin Proteins Added with Different Ratios of Taurine:Methionine on the Growth, Macrophage Activity and Antioxidant Capacity of Rainbow Trout (Oncorhynchus mykiss) Fingerlings" (O. Hernandez, L. Hernandez, et al., Veterinary and Animal Science, 2017:4-9) reports that a sample of 210 juvenile rainbow trout fed a diet fortified with equal amounts of the amino acids taurine and methionine for a period of 70 days had a mean weight gain of 313 percent with a standard deviation of 25 , while 210 fish fed with a control diet had a mean weight gain of 233 percent with a standard deviation of 19 . Units are percent. Find a \(99 \%\) confidence interval for the difference in weight gain on the two diets.