A dietician believes that adults in the U.S. today consume more caffeine than in recent years. The most recent study she could find was conducted in 2015, and said that the mean caffeine consumption for adults in the U.S. is 395 mg with a standard deviation of 85 mg. She designs a new study to compare current consumption to consumption in 2015, and measures caffeine intake for a random sample of 37 U.S. adults and find the mean caffeine consumption to be 410 mg. Round answers to 2 decimal places.