In: Math
1.A researcher is investigating the effect of a new drug to lower anxiety. The drug was shown to be safe in humans, and the researcher wants to test what dosage of the drug is needed. He assigned twenty participants with clinical anxiety disorder to four treatment groups, then gave each the treatment regimen for four weeks. At the end of the trial, the participants took an anxiety test. The scores, corrected for initial anxiety score, are reported in the table below. Lower scores indicate lower anxiety levels. Analyze the data to determine if there is any difference in anxiety scores between the groups, and if there is a difference, determine and explain which treatment is most effective
CONTROL | PLACEBO | LOW DOSE | MODERATE DOSE |
35 | 36 | 17 | 16 |
40 | 28 | 13 | 10 |
38 | 34 | 27 | 3 |
28 | 22 | 21 | 12 |
33 | 25 | 29 | 6 |