An allergy drug is tested by giving 120 people the drug and 100
An allergy drug is tested by giving 120 people the drug and 100 people a placebo. A control group consists of 80 people who were given no treatment. The number of people in each group who showed improvement appears in the table below. Allergy drug Placebo Control TotalImprovement 65 42 31 138No improvement 55 58 49 162Total 120 100 80 300 16. What […]