Which of the values below is closest to the χ2 value they would compare the calculated value to in order to determine significance at the 5% level?
Consider an experiment in which a pharmaceutical company is testing a new drug that it hopes will lower cholesterol levels. The scientists administer three treatments: a dose of the drug, a dose of a placebo, and a control group that receives neither drug nor placebo. After 24 hours, they then measured the cholesterol levels and […]