Question

The article “Effects of Diets with Whole Plant-Origin Proteins (…) of Rainbow Trout Fingerlings” 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.

Answer 1