Dr. keller wants to test the effect of a new anti-anxiety medication. he recruits a group of anxious patients and randomly assigns them to two groups. one group will receive his new medication and the other will receive a sugar pill. what is the second group called?

Achildren’s pain relief elixir contains 80. mg acetaminophen per 0.50 teaspoon. the dosage recommended for a child who weighs between 24 and 35 lb is 1.5 teaspoons. what is the range of acetaminophen doses, expressed in mg acetaminophen/kg body weight, for children who weigh between 24 and 35 lb